The Fill-In Boyfriend Summary, Characters and Themes

The Fill-In Boyfriend by Kasie West is a contemporary teen romance set in the messy stretch between high school and whatever comes next. Gia Montgomery cares a lot about how she looks to other people, especially her tight friend group.

When a breakup threatens to make her the target of public humiliation, she makes a wild, impulsive choice: she hires a stranger for the night to play her boyfriend. What starts as a quick fix becomes a chain of lies, unexpected friendships, and a growing connection to someone who sees her more clearly than her polished image ever could.

Summary

Gia Montgomery is standing in the prom parking lot when her boyfriend, Bradley, ends things with her minutes before they’re supposed to walk inside. Gia isn’t only upset about losing him; she’s terrified of the social fallout.

One girl in her friend group, Jules, has been insisting for months that Bradley doesn’t exist because he never shows up. Gia and Bradley have been long-distance, and her friends have only heard about him through her.

Now, with prom in full view, Gia can already picture Jules turning this moment into proof that Gia lied.

Panicked, Gia spots a guy sitting in a car nearby, passing time with a book while he waits for his sister. Gia approaches him and, without much tact, demands he pretend to be her boyfriend for the night.

He’s confused and resistant at first, but after Gia explains the situation, he agrees to help for a couple of hours. Gia expects him to disappear the second she looks away.

Instead, he returns dressed up, without his glasses, and somehow looks like he belongs at prom.

Gia gives him a fast rundown of the role: he’s “Bradley Harris,” a UCLA student, older than her, and her parents supposedly hate that. She leads him inside and heads toward her friends.

Claire, Laney, and Jules are there, and Jules immediately starts hunting for cracks in the story. The stand-in boyfriend covers smoothly, banters like he’s known them forever, and even performs small affectionate gestures that make the relationship look real.

Jules keeps tossing out suspicious comments, but the guy’s confidence throws her off.

Gia is relieved, but also unsettled by how easy he makes it seem. She still doesn’t know his name.

When she tries to ask, he jokes that she shouldn’t know it if she wants the act to work. Things get complicated when the guy’s sister appears and looks furious.

The sister confronts him, clearly believing Gia is using him, and warns that he’s been burned before. Gia considers confessing everything to her friends to end the stress, but the guy warns her Jules will use the truth to tear her apart.

To protect Gia from being cornered, he flips the situation by staging a loud public breakup scene in front of everyone, acting like Gia dumped him. It’s dramatic enough that her friends rally around her immediately, and Jules loses her chance to “catch” Gia.

Gia goes home shaken. She’s been dumped twice in one night: once for real, and once as part of an act that still somehow hurts.

Back at school, Jules keeps pressing for proof that Bradley exists. Gia lies to patch holes and tries to act unbothered, but the fear of being labeled a liar keeps tightening.

Then she discovers the stand-in’s sister, Bec, is now in one of her classes. Bec has a sharp edge, a hostile attitude toward Gia, and no interest in helping her contact her brother.

Gia tries anyway, partly because she feels guilty and partly because she can’t stop thinking about him.

Bec finally makes contact, but not in a friendly way. She declares that Gia “owes” her brother for prom night and demands repayment: Gia has to attend a graduation party as his new girlfriend so his ex, Eve, will stop trying to pull him back in.

Gia realizes she’s being drafted into someone else’s mess, but she agrees, boxed in by guilt and Bec’s pressure.

At Bec’s house, Gia overhears Bec confronting her brother, who is heading to Eve’s party for “closure.” He doesn’t want a fake date and seems annoyed by the plan, but when Gia steps into view, he’s surprised—and oddly considerate. He offers her a way out, yet agrees to the arrangement when Bec begs.

On the drive, Gia finally gets his name: Hayden. The tension between them softens into joking, teasing, and a strange sense of comfort.

Gia admits Bradley has been calling and texting, but she can’t make herself respond. Hayden admits part of him still wonders what he feels about Eve, and he wants tonight to settle it.

At the beachside party, Hayden introduces Gia as his girlfriend and commits fully to the performance—touches, smiles, and staged closeness. Eve watches, flirts, and tests him, while Ryan, Hayden’s former best friend, lurks in the background.

Gia learns Ryan betrayed Hayden by getting involved with Eve, and the breakup left Hayden with trust problems and a bruised sense of self. Gia helps Hayden keep his cool, and together they manufacture moments meant to signal that Hayden has moved on.

Gia catches Eve and Ryan kissing when they think no one is looking, confirming everything Hayden feared. She doesn’t expose them in the moment, but she and Hayden leave with the quiet satisfaction that Hayden saw enough to stop romanticizing the past.

Back at Hayden’s home, his mom, Olivia, is warm and curious, and she treats life like something worth paying attention to. Gia feels unexpectedly safe in that house, surrounded by people who say what they mean, even when they’re annoyed.

Gia’s own life starts to crack in other ways. She’s part of a popular friend group that runs on status, inside jokes, and unspoken rules.

Claire is her closest friend, Laney is the one who quietly absorbs tension, and Jules is the constant antagonist who knows exactly where to poke. Gia begins to notice how often she’s performed a version of herself for approval, and how often she’s gone along with cruelty just to stay on the “right” side of her friends.

A phone call brings a new complication: Gia’s older brother Drew has won an award at UCLA, and the family is invited to a ceremony. Drew insists it’s not worth the drive, but Gia wants to show up anyway.

When she mentions it to Hayden, he offers to drive her, and Bec tags along, determined to supervise. The trip becomes one of those small turning points where Gia feels, for once, like a real person instead of a carefully edited profile.

At the ceremony, Gia gets blindsided. Drew’s winning film, Reprogramming a Generation, uses footage of their family and criticizes social media validation.

Gia appears in the film checking likes, worrying about numbers, and talking about deleting posts that don’t perform well. The audience laughs, and Gia feels humiliated.

The worst part is that the portrayal isn’t entirely wrong. She leaves furious at Drew and hurt that her parents treat the film like clever commentary instead of a violation.

Olivia tells Gia that depth comes from learning people’s stories, not just curating her own. Gia tries to take that seriously, even awkwardly practicing by asking strangers about themselves.

She and Hayden spend more time together—ice cream, jokes, rehearsal lines for Hayden’s play, and moments that feel like they’re sliding from fake relationship into real connection. Gia also keeps battling her friend group’s constant tension, especially as Jules pushes her into conflicts and keeps testing her loyalty.

Then everything collapses at once. Gia attends Hayden’s play and sees Eve in the audience.

During intermission, Spencer—Hayden’s friend—suggests paying Gia to be his date, making crude assumptions about Gia and Hayden’s arrangement. Gia is shocked and angry, but when she sees Hayden laughing with Eve, jealousy hits her too.

She storms out, feeling used and foolish, and later confronts Hayden on the beach. Hayden doesn’t fully believe her about Spencer at first, because Spencer is his closest friend and Hayden’s past has trained him to expect betrayal.

Gia refuses to fight for trust she hasn’t earned in his eyes and leaves in tears.

Bec tells Gia she believes her and later reveals that Hayden confronted Spencer and learned the truth. Hayden is ashamed and wants to make things right, but Gia has told him to stay away.

Bec takes matters into her own hands, essentially forcing them into the same place at the same time so they’ll finally talk. Gia vents her anger by throwing baseballs at junked cars, and Hayden shows up ready to take responsibility.

He admits he judged her unfairly and let old wounds decide what he believed. Gia admits she’s made a habit of lying when she’s scared.

They don’t magically fix everything, but they choose honesty, and Gia kisses him—this time with intention.

Meanwhile, Gia’s biggest lie detonates. Drew, still angry and still convinced he’s teaching lessons, pulls a stunt: he brings the real Bradley to meet Gia’s friends in public, proving Bradley existed and exposing that Gia used a “fill-in” for prom and covered it with more lies.

Claire and Laney feel betrayed and walk away. Gia’s reputation shifts overnight, and whispers follow her through school.

Instead of hiding, Gia decides to stop managing the narrative. At a school rally, she takes the microphone and admits she lied because she didn’t trust that people would stay if she disappointed them.

She apologizes to her friends and to anyone she let down. The confession doesn’t instantly repair anything.

At graduation night, Claire, Laney, and Jules still keep their distance. Gia stands alone for a while, facing the consequences without another performance to cover the silence.

Hayden and Bec show up anyway, cutting through the loneliness with presence instead of speeches. Gia realizes she can survive being disliked, survive losing the old version of her life, and still move forward with her plans for college and political science.

By the end, Gia isn’t “fixed,” but she’s more honest, more aware, and no longer willing to trade truth for approval. She and Hayden choose each other openly, not as a cover story, but as something real—messy, imperfect, and earned.

Characters

Gia Montgomery

Gia is the story’s emotional center: a girl who has learned to survive high school by curating an image so carefully that the idea of being exposed as “fake” feels like social death. Her panic in the prom parking lot isn’t only about heartbreak; it’s about control slipping away in front of people whose approval has become a kind of currency to her.

What makes Gia compelling is that she’s not simply superficial—she’s insecure, strategic, funny, and capable of genuine care, but she has trained herself to prioritize appearances first and feelings second. Over time, she begins to recognize how exhausting it is to live by performance, and how her constant small lies—meant to “protect” her status—chip away at trust with the people who matter.

Her growth doesn’t come from becoming a totally different person; it comes from choosing honesty even when it costs her popularity, accepting that she can’t force people to see her a certain way, and realizing that real connection requires the risk of being misunderstood.

Hayden

Hayden starts as a stranger who becomes a mirror: he sees Gia without her usual social script, and his presence forces her to confront what she’s been doing and why. He is playful, quick-thinking, and surprisingly principled for someone who agrees to a ridiculous prom scheme, but his kindness is not naïve—he carries bruises from betrayal, and that history shapes his instincts.

Hayden’s defining tension is loyalty versus truth: he is fiercely loyal to people like Spencer even when that loyalty blinds him, and he wants to believe the best in those close to him because accepting betrayal again would mean admitting he didn’t learn enough from the last time. With Gia, he is drawn to her spark and vulnerability, but he is also wary because her lies resemble the kind of manipulation that once hurt him.

His arc is less about becoming “better” and more about becoming braver—braver about trusting evidence over comfort, braver about admitting when he’s wrong, and braver about choosing the person in front of him instead of the story he’s already written in his head.

Bradley Harris

Bradley functions as both a real person and a symbol of Gia’s early priorities. As a boyfriend, he is convenient in the sense that the long-distance setup allows Gia to enjoy the status of “having someone” without integrating him into her real life—until that arrangement collapses at prom.

His breakup is revealing because it strips away the fantasy and forces Gia to face what she feared most: walking into public disappointment alone. Later, when Bradley reappears, he becomes a kind of social proof that ironically intensifies the damage—because the problem was never whether he existed, but that Gia shaped reality to manage her reputation.

Bradley’s role highlights how easily Gia used romantic narratives as props, and how little emotional safety she actually had beneath the polish.

Jules

Jules is the antagonist in Gia’s social world, but she isn’t written as a simple villain; she’s sharp, defensive, and hungry for control in ways that suggest her own instability. Her obsession with proving Gia lied is less about truth and more about leverage—if Jules can brand Gia as fake, she can tilt the group’s power dynamics and isolate the person she envies or resents.

When Jules finally reveals pieces of her personal situation—constant moving, lack of rooted belonging—it reframes her aggression as a strategy for security: she disrupts others before she can be left behind. Even her moments of softness feel complicated, because she can be sincere and manipulative in the same breath.

Jules ultimately exposes a central theme of The Fill-In Boyfriend: that people who feel disposable sometimes try to gain value by making someone else look worse.

Claire

Claire is the moral barometer of the friend group and the person Gia unconsciously relies on as emotional infrastructure. She has a calm confidence that makes her feel like the “safe” friend—until Gia’s lies prove that Claire’s trust was being used as a cushion.

Claire’s anger lands so hard because it isn’t performative; it’s the kind of disappointment that comes from realizing someone you believed in didn’t believe in you back. She also represents the future—college, roommate plans, a life beyond high school—and when Claire pulls away, Gia feels not only rejected but unmoored.

Claire’s arc is less about changing herself and more about holding a boundary: she refuses to reward dishonesty with easy forgiveness, forcing Gia to grow up in a way Gia can’t avoid.

Laney

Laney embodies the quieter costs of high school hierarchies: she’s loyal, present, and emotionally tuned in, yet she is often treated as secondary within the group’s status economy. Her tension about community college versus UCLA reveals how much she’s been measuring herself against her friends’ trajectories, and how easily friendship can become an unspoken competition.

Laney’s hurt is subtler than Claire’s, but it cuts deep—because she isn’t only reacting to the lie, she’s reacting to the feeling that Gia’s world has always had tiers, and she’s been trying not to notice where she stands. When Laney follows Claire away, it signals that Gia didn’t just break one relationship; she cracked the foundation of the group’s shared trust.

Bec

Bec is chaos with a conscience—protective, blunt, theatrical, and far more perceptive than her abrasive style first suggests. She initially appears as an obstacle because she challenges Gia’s entitlement, but she becomes one of Gia’s most honest relationships precisely because she doesn’t care about Gia’s popularity.

Bec’s loyalty to Hayden is fierce and sometimes controlling, yet it comes from witnessing him being used and wanting to prevent it from happening again. Over time, Bec evolves into a catalyst for change: she pushes Gia toward accountability, forces confrontations to happen, and even engineers moments that are manipulative but ultimately healing, like pushing Gia and Hayden to finally talk.

Bec’s punk exterior and her tenderness underneath reinforce the book’s idea that depth is often misread when people judge by packaging.

Drew Montgomery

Drew is the most painful kind of antagonist: family who believes he is right. His film is framed as social commentary, but for Gia it feels like betrayal because it uses her real insecurities as a punchline in public.

Drew’s refusal to apologize at first reveals a stubborn moral arrogance—he equates humiliation with “accountability,” and he confuses being insightful with being kind. Yet Drew is not heartless; he is frustrated by what he sees as their parents’ permissiveness and by Gia’s avoidance of consequences, and he channels that frustration into a project that crosses ethical lines.

His eventual apology matters because it isn’t just about the video; it signals that he finally sees Gia as a person, not a case study, and that he’s willing to repair rather than prosecute.

Olivia

Olivia, Hayden’s mother, functions as the story’s clearest voice of grounded adulthood. She offers Gia something Gia rarely gets from her own parents: emotional permission to feel messy, to be hurt, and to seek depth without shame.

Olivia’s artist perspective makes her attentive to motives and patterns—she doesn’t excuse revenge, but she understands why people reach for it. When she tells Gia that depth comes from learning others’ stories, it becomes a practical framework Gia tries to apply, not as a slogan but as a way to rewire her instincts.

Olivia also represents a healthier model of family communication: direct, curious, and emotionally present.

Spencer

Spencer represents the polished version of toxic entitlement: charming, socially dominant, and used to treating boundaries as negotiable. His proposition to Gia and the way he reframes events afterward show how easily he manipulates narratives to protect himself, especially by exploiting Gia’s known history of lying.

What makes Spencer particularly dangerous in the story is that he weaponizes plausibility—he knows people will believe him because his status and confidence make his version feel “cleaner” than Gia’s. He also becomes the stress test for Hayden’s loyalty, forcing Hayden to choose between the comfort of believing his best friend and the discomfort of recognizing betrayal again.

Eve Sanders

Eve is not simply “the ex”; she is a driver of Hayden’s unresolved grief and a symbol of the kind of relationship that turns love into a power game. She invites Hayden into a space where she can measure whether she still owns an emotional stake in him, and she uses flirtation and inside jokes as control mechanisms.

Her behavior suggests she enjoys keeping Hayden available as an option even while being involved with someone else, which makes her less a romantic rival to Gia and more an embodiment of manipulation that Hayden must outgrow. The party sequence matters because it gives Hayden closure not through winning Eve back, but through seeing the truth clearly enough to stop wanting her.

Ryan

Ryan is mostly seen through the fallout he caused, which is fitting: betrayal often lives longer in consequence than in screen time. As Hayden’s former best friend and Eve’s partner, Ryan represents the specific wound that shapes Hayden’s mistrust and reflexive loyalty—once someone has been blindsided by a close friend, they may cling harder to the next friendship to avoid reliving that loss.

Ryan’s presence also highlights the book’s theme of performative relationships: he and Eve’s behavior is less about affection and more about optics and advantage.

Nate

Nate is a quieter thread of the story’s honesty-versus-image theme. He is not malicious, just oblivious, especially to Bec’s feelings, and his passivity becomes its own kind of harm.

Through Nate, the book shows that people don’t have to be cruel to cause pain; they just have to keep choosing convenience over clarity. He also serves as a contrast to Hayden—where Hayden is over-attentive because of past wounds, Nate is under-attentive because he hasn’t learned to look closely.

Logan Fowler

Logan appears as an alternate social route for Gia—an easy, popular option that fits her old self’s priorities. His invitation underscores the life Gia could keep living if she continues choosing status and flirtation as protection.

The fact that Gia misses his party and becomes increasingly uninterested in that kind of social validation signals her shift: she is moving away from being shaped by who wants her attention and toward choosing what kind of person she wants to be.

Daniel

Daniel’s presence is brief but meaningful as a symbol of continuity and community beyond Gia’s personal drama. When Gia hands him the mic after confessing publicly, it shows she is finally willing to stop controlling the narrative and let the world keep turning without her managing every detail.

Daniel becomes part of that transition—proof that leadership can be shared and that stepping back doesn’t equal disappearing.

Blake and Marcus

Blake and Marcus function as “outside the bubble” characters who help Gia practice a different kind of attention. With them, Gia experiments with curiosity rather than performance—asking questions, listening, and trying to see people as more than roles in her social storyline.

Marcus, especially, punctures Gia’s illusions about outgrowing her friend group too quickly, implying that maturity isn’t just distancing yourself from messy people; it’s learning how to build healthier connections and boundaries. Both characters quietly support the book’s core movement: from image-management to relationship-building.

Will

Will and his junkyard baseball-throwing setup operate as a pressure valve in the narrative, giving characters a safe space to externalize anger without turning it on each other. Will’s role is less about dialogue and more about what he enables: the story repeatedly uses that space to transform bottled-up emotion into honest conversation afterward.

In that sense, he supports the theme that feelings don’t disappear when ignored—they just leak out sideways until you give them somewhere real to go.

Themes

Reputation, Image Management, and the Cost of Performing a Version of Yourself

Prom night forces Gia to confront how much of her identity has been built for an audience. The panic that hits when Bradley drives away isn’t only heartbreak; it’s the fear of walking into a room and being seen as someone who lied, someone who isn’t as polished and enviable as the version of herself she’s been selling.

In The Fill-In Boyfriend, reputation operates like a currency—something earned, spent, protected, and sometimes faked to avoid social punishment. Gia’s decision to recruit a stranger as “Bradley” is an extreme version of what she already does every day: shaping a narrative that keeps her in good standing.

Her friends’ reactions confirm that status is fragile; a single crack invites scrutiny, jokes, and a shift in power, especially from Jules, who treats doubt like a weapon.

The story also shows how image management creates its own traps. Once Gia tells the first lie, she has to build supporting lies, then defend them with more performance.

She becomes less free, not more secure, because the image demands constant maintenance—social media posts that imply she’s fine, a boyfriend’s online profile that must look believable, explanations that must stay consistent across multiple listeners. The irony is that the more Gia tries to control how others see her, the less anyone actually knows her.

Even her closest friends are reacting to a curated storyline rather than the person underneath it. The humiliation of being featured in Drew’s film about validation is painful because it exposes the mechanics behind her choices: chasing approval, measuring worth by reaction, and fearing invisibility.

The theme isn’t saying popularity is meaningless; it’s showing how exhausting it is to live as a public relations project, and how quickly a person can confuse being admired with being understood.

Honesty, Trust, and the Fear of Being Left

Gia lies not because deception is fun, but because she expects abandonment if she appears imperfect. The month-long spiral after prom makes that clear: the lie becomes a shield against being labeled “fake,” but it also signals that Gia doesn’t believe her friendships can survive discomfort.

Trust is treated like a fragile bridge—once it’s shaken, everyone decides whether to reinforce it or walk away. Claire’s anger is so intense because the lie isn’t only about a boy; it changes the meaning of the relationship.

Claire thought she was supporting a friend through a breakup, but the story she responded to wasn’t real, and that makes her feel manipulated and foolish.

Hayden’s reaction later mirrors this from a different angle. Because he has been burned by Eve and Ryan, he is primed to doubt.

When Spencer accuses Gia, Hayden’s loyalty to his friend and his fear of being fooled override what he has already seen in Gia. The resulting conflict shows how trust can be undone by old wounds: people don’t evaluate the present situation neutrally; they interpret it through past betrayals.

Gia’s insistence—“I’m not a liar”—lands as more than a defense of facts. She’s fighting for a stable identity that isn’t defined by one mistake or by a reputation others assign her.

What makes this theme hit harder is that the book doesn’t treat confession as an instant fix. Gia’s public apology at the rally is brave, but it doesn’t immediately restore what was lost.

Some damage has a waiting period; people need time to process, and some relationships change shape permanently. That realism gives weight to the idea that honesty isn’t valuable because it produces perfect outcomes—it’s valuable because it stops the internal corrosion of living in fear.

Gia’s growth happens when she accepts that she can’t guarantee people will stay, but she can choose to be someone who doesn’t hide behind a story.

Friendship Politics, Social Power, and Belonging as a Competition

The friend group is less a safe home and more a small society with shifting alliances. Jules understands the rules: control the narrative, isolate a rival, and make others afraid to disagree.

Her suspicion about Bradley is not only curiosity; it’s a strategy to reposition Gia as untrustworthy and therefore less powerful. Claire and Laney become the audience Jules tries to win, and Gia becomes the person trying to keep her standing without openly declaring war.

That dynamic captures a specific kind of teenage conflict where people rarely say what they want directly. Instead, they use jokes, “concerns,” subtle exclusions, seating arrangements in the car, and public embarrassment to move status around.

Belonging becomes competitive, especially as graduation approaches and futures split. Laney’s anxiety about community college while others go to UCLA adds a quiet pressure: the group is changing, and everyone senses it.

Jules getting into UCLA but hiding it introduces another layer—people keep secrets not only for privacy, but to manage how they are valued. Even when Jules shows moments of vulnerability, she also admits to wanting Claire away from Gia because Claire “deserved better.” That line reveals how belonging can turn into possession: if you fear losing someone, you may try to control where their loyalty goes.

At the same time, the book complicates the idea of “mean girl vs. nice girl.” Gia isn’t always kind; she has laughed along when someone else was mocked, and she has benefited from being on top.

Bec’s anger at Gia is partly about that history. This matters because it shows social power isn’t only something inflicted by villains—it’s often maintained by bystanders and beneficiaries.

The beach confrontation, the whispered “liar,” and the isolation at grad night all show how quickly a group can enforce moral judgment once someone is marked. The theme asks what belonging is worth if it depends on constant performance and fear.

It also suggests that real friendship requires risk: letting people see the unflattering parts without turning it into public punishment.

Loyalty, Betrayal, and Choosing Who Deserves Your Commitment

Multiple relationships in The Fill-In Boyfriend revolve around the question of loyalty: to friends, to family, to an image, to yourself. Hayden’s history with Ryan and Eve establishes betrayal as a lingering injury, not a single event.

He doesn’t just lose a girlfriend; he loses trust in his own judgment and in the people closest to him. That background explains why he struggles to believe Gia when Spencer lies—Hayden equates loyalty with survival, so he protects his bond with Spencer even when warning signs appear.

The theme shows the dark side of loyalty: it can become stubbornness, a refusal to reconsider, a way of avoiding the fear of being alone again.

Gia’s loyalty is tested too, but in a different way. She is loyal to her social position, loyal to the idea that her friends must keep seeing her a certain way, and loyal to the version of herself that “wins.” That loyalty pushes her into choices that betray her own values—like continuing a lie even when it starts to hurt other people.

Her relationship with Drew adds a family version of this theme. Drew claims his film is meant to help, but he refuses accountability for the harm, and their parents enable him by praising the “commentary” instead of protecting Gia.

Gia’s anger is partly about betrayal, but also about being treated as a prop—useful for a message, not respected as a person.

The turning point comes when loyalty gets redefined. Gia stops treating loyalty as “protect the story at any cost” and starts treating it as “protect the relationship with the truth.” Hayden, after confronting Spencer and learning what happened, begins shifting as well—recognizing that loyalty without integrity is just blindness.

Even Bec’s meddling, while chaotic, is rooted in a fierce loyalty to her brother’s well-being and to fairness. The theme lands on a hard lesson: loyalty should be earned continuously, not granted forever because of history or proximity.

Sometimes the loyal act is confrontation, not defense. Sometimes it’s walking away from people who demand you carry their version of events.

Boundaries, Consent, and Being Treated as a Person Instead of a Tool

A quieter but persistent thread is how often Gia is used—by friends, by family, and even by circumstances—and how she learns to push back. The “fill-in boyfriend” arrangement starts as a transaction: Gia needs protection from humiliation, Hayden agrees under pressure and pity, and later Bec treats Gia like a debt payment.

The language of owing and paying up is important because it turns human connection into leverage. Bec’s hostility at prom highlights the ethical discomfort of the arrangement, even if Gia is desperate; Gia’s later participation at Eve’s party shows how quickly a favor can become an expectation.

Spencer’s proposition at the fundraiser is the ugliest expression of this theme because he reduces Gia to something purchasable. It’s not only an insult; it’s a boundary violation that reframes her presence as sexual availability and her relationship with Hayden as a scheme.

Gia’s reaction—slapping him and leaving—signals a boundary that doesn’t require politeness to be valid. What makes the aftermath painful is Hayden’s initial hesitation to fully trust her account, which shows how boundary violations get minimized when they complicate friendships.

Gia’s refusal to stay connected to someone who doesn’t trust her is another boundary: she won’t keep auditioning for belief.

The GPS tracking by her parents adds a parallel form of boundary crossing. They claim it’s safety, but it also communicates distrust and control.

Gia demanding that her mother stop pretending everything is fine is part of the same lesson—family love without respect can still feel suffocating. By the end, Gia’s public confession isn’t just about honesty; it’s a boundary against living inside other people’s narratives.

She refuses to be managed, mocked, traded, or tracked without question. The theme argues that growing up includes learning where you end and others begin, and insisting that your feelings and consent matter even when others think they’re acting for your benefit.