Falling for My Enemy Summary, Characters and Themes
Falling for My Enemy by Claire Kingsley is a contemporary romance that explores the complicated relationship between two sharply intelligent, strong-willed psychology researchers. Hazel Kiegen and Corban Nash start as professional rivals, each skeptical and often annoyed by the other’s approaches to science and life.
Yet, beneath the surface of their clashes lies a growing attraction, complicated by personal vulnerabilities and past wounds. The story combines academic ambition, emotional tension, and moments of humor to reveal how opposites can challenge, frustrate, and ultimately transform one another, leading to a rich and unexpected romance.
Summary
The story begins with Hazel Kiegen, a psychology researcher at Woodward College who prides herself on rigorous science and a skeptical eye. When she learns that Corban Nash, a man she considers a fraud, is coming to her college to present his controversial “accelerated intimacy theory,” she is immediately unsettled.
Corban claims that his questionnaire can make two people fall in love, a notion Hazel dismisses for its lack of scientific validity. Their initial meeting is tense, with Hazel confronting Corban during his talk and the two immediately establishing a combative but charged dynamic.
Corban, a former data analyst turned researcher, is socially awkward but charismatic in his own way. He is determined to prove the validity of his theory and sees working at Woodward College as a chance to gain legitimacy.
Despite their professional antagonism, both Hazel and Corban feel a reluctant, unspoken attraction, complicated by their clashing personalities and differing views on science and relationships.
Hazel’s personal life adds depth to her character—she lives alone with her stubborn cat Erwin, enjoys running with friends, and balances her social life with a hint of dissatisfaction around her romantic and sexual fulfillment. Her friends Nora, Sophie, and Everly encourage her to embrace flirtation as a way to unsettle Corban, which she finds embarrassing but tries to adopt, creating moments of awkward humor.
Their work lives become intertwined when their boss, Dr. Elliott Sheffield, assigns them to collaborate on a study of nonverbal communication, requiring them to spend time together.
Despite resistance, they gradually develop professional respect and a complicated friendship underpinned by ongoing flirtation and mutual irritation. Corban’s quirky habits and intellectual passion contrast with Hazel’s more cautious and analytic nature, but their differences create an intense dynamic that keeps both on edge.
Their interactions include a series of small battles—such as Corban freezing Hazel’s lunch and Hazel retaliating by posting fake flyers using Corban’s number—and also tender moments like Hazel baking cinnamon rolls for their colleagues, surprising Corban with her warmth beneath the sharp exterior. These moments reveal the layers beneath their initial antagonism, highlighting their growing connection.
At a conference far from home, Corban falls ill, and Hazel unexpectedly stays to care for him. This act of kindness softens their relationship and opens the door for deeper emotional intimacy.
Corban invites Hazel to try his questionnaire, and though skeptical, Hazel participates. Their answers reveal unexpected common ground, making their relationship more complex.
Despite Hazel’s resistance, they begin to share moments of genuine vulnerability.
Back in Seattle, Hazel faces challenges beyond work, including a rivalry with a group called the “Bedazzled Bitches” during a half-marathon training run with her friends. This subplot reveals Hazel’s willingness to confront her insecurities and grow, supported by her close-knit circle.
Meanwhile, Corban’s family life, including his pregnant twin sister Molly and old friend Paisley, adds layers of emotion and occasional jealousy to the story, showing the complexities behind their growing bond.
Their relationship continues to evolve through a mix of flirtation, awkward honesty, and physical attraction. They struggle to define their feelings, caught between professional boundaries and personal desire.
Hazel is cautious, fearing emotional pain and rejecting the idea of friendship or ongoing physical intimacy, while Corban wrestles with his own fears and hopes.
A turning point comes when Hazel invites Corban to dinner, where tension and unspoken feelings culminate in a passionate encounter that changes the nature of their relationship. Though Hazel remains wary, this moment signifies a shift from mere colleagues or casual partners to something deeper and more complicated.
Throughout the narrative, their connection deepens through shared experiences, like Corban helping Hazel handle her difficult cat’s vet visit, symbolizing the growing emotional investment they have in each other’s lives. Their conversations range from intellectual debates to personal revelations, building a rich, authentic relationship.
However, misunderstandings and emotional barriers persist. After a period of distance and silence marked by hurt and frustration, Hazel participates in the half-marathon with her friends, where Corban surprises her with a public declaration of love.
This confession breaks down the walls between them, leading Hazel to admit her own feelings.
The story closes on a hopeful note with the couple celebrating a joint grant for their research, which also serves as Corban’s romantic proposal. Surrounded by friends and family, they embrace the imperfections that make their bond unique.
Three years later, the epilogue shows Hazel and Corban thriving in family life alongside Molly and her husband, preparing for the arrival of their child. The narrative ends with a celebration of love’s transformative power and the idea of finding one’s “penguin”—a lifelong partner who complements and completes you.

Characters
Hazel Kiegen
Hazel Kiegen is portrayed as an intelligent, skeptical, and deeply analytical psychology researcher who holds science and the scientific method in high regard. She is initially rigid in her professional views, especially about Corban Nash’s controversial accelerated intimacy theory, which she dismisses as unscientific and lacking rigor.
Hazel’s personality combines a sharp intellect with a warm, humorous side that emerges in her personal life—she cherishes her close-knit group of friends, values fitness balanced with social fun, and cares deeply for her fluffy cat Erwin, revealing a nurturing dimension. Despite her confidence in her career and friendships, Hazel struggles with vulnerability, particularly in matters of intimacy and relationships.
Her frustration with sexual dissatisfaction and emotional guardedness contrasts with the softer, more open feelings she gradually reveals toward Corban. Hazel’s past includes a quietly ended, convenience-based marriage, which adds layers of complexity to her cautious approach to love.
Throughout the narrative, she evolves from a woman determined to maintain emotional control and professional distance to someone who learns to acknowledge her desires and insecurities, allowing herself to be vulnerable and open to connection. This growth is marked by her willingness to engage in challenging experiences, such as training for a half-marathon and navigating the awkward tension between her and Corban, ultimately culminating in a fuller embrace of love and partnership.
Corban Nash
Corban Nash is depicted as a charismatic yet socially awkward data analyst turned psychology researcher whose passion lies in scientifically decoding human attraction and intimacy. He is confident—bordering on cocky—about his accelerated intimacy questionnaire, despite its contentious reception in the academic community, and is eager to legitimize his work by joining Woodward College.
Corban’s personality mixes intellectual curiosity, a geeky enthusiasm for comic books and data, and a playful, mischievous streak that manifests in his pranks and teasing banter with Hazel. Beneath his brash exterior, he wrestles with insecurity and a longing for meaningful connection, often masked by his sharp wit and professional ambition.
His close relationship with his twin sister Molly and his interactions with friends like Paisley reveal his more vulnerable, human side, emphasizing his internal conflicts about love and acceptance. Corban’s dynamic with Hazel shifts from antagonistic and competitive to complex and emotionally charged, marked by a blend of irritation, fascination, and deepening affection.
His willingness to care for Hazel when she needs support and to fiercely defend her highlights his growing emotional investment. Corban’s journey explores the tension between his scientific rationalism and the messy unpredictability of human emotions, ultimately leading him to confront his fears of intimacy and embrace the possibility of love with Hazel.
Molly Nash
Molly Nash, Corban’s twin sister, serves as a grounding and supportive figure within the story. Pregnant and navigating her own life changes, Molly represents a nurturing presence and a voice of reason, particularly in relation to Corban’s emotional struggles.
She is protective of her brother and offers both encouragement and gentle challenges, pushing him to confront his fears about love and relationships. Molly’s pregnancy and family life introduce themes of growth, continuity, and the importance of support systems.
Her character also indirectly highlights the contrast between familial love and the romantic complexities Corban and Hazel face, reinforcing the story’s emphasis on the varied forms of connection.
Nora, Sophie, and Everly
Hazel’s circle of friends—Nora, Sophie, and Everly—are vibrant, supportive, and often serve as catalysts for Hazel’s personal growth. They encourage her to break out of her comfort zone, pushing her to explore her sexuality and vulnerability despite her awkwardness and reservations.
Their presence in the story adds warmth and humor, illustrating the importance of friendship and camaraderie as Hazel navigates her complex feelings for Corban. Activities shared with them, like running sessions and spirited competitions, reinforce Hazel’s willingness to challenge herself and embrace life beyond the academic setting.
Sophie’s help with Hazel’s cat Erwin also showcases the trust and closeness within the group.
Erwin (Hazel’s Cat)
Though a non-human character, Erwin the cat holds symbolic and narrative importance. His stubbornness and difficulty with grooming introduce moments of levity and reveal Hazel’s caring and sometimes frazzled nature.
The episodes involving Erwin serve as opportunities for Hazel and Corban’s relationship to deepen—particularly when Corban helps with Erwin’s vet visit—highlighting their growing intimacy and Corban’s protective instincts toward Hazel. Erwin embodies the domestic, personal side of Hazel’s life that contrasts with her professional demeanor.
Dr. Elliott Sheffield
Dr. Elliott Sheffield, Hazel’s boss, plays a subtle but influential role in the story by encouraging Hazel to engage with Corban’s controversial theories and to collaborate despite their personal conflicts.
He represents the academic environment and the pressures of professional growth, gently pushing the protagonists toward opportunities that challenge their preconceived notions. Elliott’s interventions facilitate the professional partnership between Hazel and Corban, which becomes the foundation for their evolving relationship.
Paisley
Paisley, Corban’s old high school crush and a friend in his social circle, adds another layer of complexity and tension, particularly with Hazel’s insecurities and jealousy. Paisley’s interactions with Corban and Hazel highlight the vulnerability and emotional stakes involved as the characters confront feelings of possessiveness and uncertainty about their evolving relationships.
Themes
Scientific Rationality versus Emotional Experience
In Falling for My Enemy, the tension between the rational, scientific approach to understanding human behavior and the messy, unpredictable nature of emotional experience is a persistent undercurrent throughout the narrative. Hazel’s staunch belief in the scientific method as the ultimate tool for uncovering truth clashes with Corban’s controversial theory of “accelerated intimacy,” which promises to manufacture love through a structured questionnaire.
Hazel’s skepticism is grounded in her commitment to empirical rigor and valid evidence, making her dismissive of Corban’s anecdotal data and lack of scientific controls. This skepticism embodies the broader conflict between objective knowledge and subjective feeling.
Despite their professional differences, the story reveals how emotional connections often defy neat categorization or quantification. Corban’s theory, while scientifically unorthodox, is rooted in a desire to understand and harness human intimacy, reflecting the challenge of reconciling cold data with warm human experience.
The narrative portrays how both characters, initially rigid in their worldviews, gradually acknowledge the limitations of strict rationality when it comes to matters of the heart. Hazel’s eventual softening toward Corban’s approach—and her growing feelings for him—demonstrate that emotional experience can transcend scientific boundaries.
At the same time, Corban’s analytical mind wrestles with the unpredictability of genuine attraction, revealing that even scientific attempts to decode love must contend with the complexities of human vulnerability. This theme highlights the interplay between logic and emotion, suggesting that true understanding requires openness to both.
The Complexity of Professional and Personal Boundaries
The story intricately explores the challenges that arise when professional and personal lives intersect, particularly in environments where intellectual ambition and emotional vulnerability coexist. Hazel and Corban’s relationship begins with antagonism fueled by clashing personalities and professional competition, evolving into a complicated mix of rivalry, flirtation, and collaboration.
The workplace setting at Woodward College amplifies the tension between their public roles as researchers and their private feelings, forcing them to navigate boundaries carefully. Their forced partnership on research projects and shared conference experiences blur the line between colleagues and something more intimate.
This tension reflects the real-world difficulty of maintaining professionalism while managing personal attraction, especially when emotions are heightened by intellectual respect and competitive dynamics. Hazel’s struggle to balance her desire for independence with burgeoning feelings for Corban underscores the emotional labor involved in preserving boundaries without shutting down connection.
Likewise, Corban’s awkwardness and simultaneous desire to impress and understand Hazel reveal how professional respect can evolve into deeper emotional investment. Their interactions, from pranks to intimate conversations, show how the collision of work and personal realms creates fertile ground for both conflict and growth.
The theme sheds light on the nuanced negotiation required to maintain identity and integrity when the lines between work and life become porous, emphasizing how love and ambition can coexist in complex, sometimes uncomfortable ways.
Vulnerability and Emotional Growth
Throughout the narrative, both Hazel and Corban undergo significant emotional growth fueled by moments of vulnerability that challenge their initial defenses. Hazel’s guardedness, shaped by past disappointments such as her failed marriage, and her discomfort with sexual and emotional intimacy, is slowly chipped away by her interactions with Corban and the support of her close friends.
Her efforts to engage in new experiences, such as training for a half-marathon and exploring flirtation despite awkwardness, reveal a willingness to confront personal insecurities. These moments of vulnerability are crucial in opening her to the possibility of connection and self-acceptance.
Corban’s own vulnerabilities emerge through his social awkwardness, fear of rejection, and his candid conversations with his sister Molly, who encourages him to face his emotional fears. His scientific pursuit to understand love ironically exposes his own struggles to experience it authentically.
The gradual softening between Hazel and Corban is marked by small acts of kindness and shared confidences—caring for Corban during illness, baking cinnamon rolls, and navigating the emotional complexities surrounding Corban’s family. These episodes symbolize how emotional openness fosters deeper connection and mutual understanding.
The theme portrays vulnerability not as weakness but as a catalyst for transformation, showing how opening oneself to imperfection and uncertainty is essential to forming meaningful relationships. It reflects the universal challenge of risking emotional exposure to overcome loneliness and achieve growth.
The Power of Friendship and Community Support
The presence and influence of friendships and community provide a strong counterbalance to the protagonists’ personal struggles and romantic tension. Hazel’s close-knit circle of friends, including Nora, Sophie, and Everly, offer not only companionship but also emotional grounding and encouragement throughout her journey.
Their shared activities—running sessions, social events, and supportive conversations—highlight the importance of camaraderie in sustaining resilience and fostering personal growth. These friendships provide Hazel with a safe space to express frustrations, explore her identity, and gain perspective on her evolving feelings for Corban.
The spirited competition with the “Bedazzled Bitches” during the half-marathon exemplifies how friendship and collective determination create a sense of empowerment beyond individual challenges. On Corban’s side, family connections, especially with his twin sister Molly, reveal another layer of emotional support and reality-checking, reminding him of the value of love and vulnerability despite setbacks.
The story underscores how both protagonists rely on their respective support networks to navigate professional pressures and emotional complexities. This theme emphasizes that love and personal fulfillment are often interwoven with the strength drawn from community.
It acknowledges the human need for connection beyond romantic partnerships and illustrates how friendship and family act as anchors, helping individuals confront fears and celebrate victories together.
The Intersection of Science and Romance
The narrative presents an engaging exploration of how scientific inquiry and romantic relationships can both conflict and complement each other. Corban’s development of the “accelerated intimacy questionnaire” represents an attempt to scientifically quantify and facilitate the process of falling in love, embodying the desire to make the elusive nature of romance understandable and replicable.
Hazel’s opposition to this approach reflects a common skepticism toward reducing complex human emotions to data points and controlled experiments. Yet, their interactions demonstrate how science and romance do not have to be mutually exclusive but can instead inform one another in meaningful ways.
The collaboration on research projects and discussions about psychological phenomena provide a backdrop that enriches their personal relationship with intellectual curiosity and mutual respect. This blend of scientific rigor and emotional discovery showcases how knowledge and affection can coexist, each enhancing the other.
Their story suggests that while science seeks patterns and explanations, romance thrives in unpredictability and emotional nuance. The evolving dynamic between Hazel and Corban embodies the tension and harmony between these two realms, ultimately highlighting that love—like science—requires exploration, patience, and an openness to the unknown.
This theme challenges readers to appreciate the multifaceted nature of human connection, where logic and feeling are both essential ingredients.