Anthony Giddens is a highly influential English sociologist and former director of the London School of Economics whose work provides the sociohistorical framework for Perel’s analysis of modern relationships. He is a leading theorist of late modernity, examining how large-scale social transformations affect the private lives and identities of individuals. For Perel, Giddens explains the cultural context in which the central dilemmas of Mating in Captivity unfold.

His primary contribution to the book is his theory of the “pure relationship,” an intimate bond based not on tradition or economic necessity, but on emotional and sexual satisfaction. Giddens also coined the term “plastic sexuality” to describe sex that is decoupled from reproduction, becoming a feature of personal identity and self-exploration. These concepts help Perel argue that as romantic love has become central to marriage, it has also become freighted with unprecedented expectations for fulfillment, meaning, and security. Giddens’s work allows Perel to connect the private anxieties of couples to the broader historical shift toward individualism, showing why modern love is simultaneously liberating and burdensome.

Stephen A. Mitchell was a prominent American psychologist and a founder of the relational school of psychoanalysis. His posthumously published book, Can Love Last? (2002), is a key theoretical touchstone for Perel, supplying the psychological vocabulary for the core paradox she explores. Mitchell’s work helps shift the psychoanalytic focus from internal drives to the dynamics between people, making his insights particularly relevant to couples therapy.

Mitchell’s central argument is that romance requires the ability to sustain the tension between contradictory human needs: the need for security and predictability on one hand and the need for novelty and risk on the other. He posits that desire often wanes not because of a lack of love, but because couples resolve this tension by prioritizing safety to the point of stifling all mystery and difference. Perel draws heavily on Mitchell’s idea that partners must learn to manage these polarities—love and aggression, dependence and autonomy—rather than attempting to eliminate them. This framework underwrites Perel’s thesis that sustaining desire requires couples to tolerate uncertainty and preserve a sense of separateness.

Michael J. Bader is an American psychologist and psychoanalyst whose book Arousal: The Secret Logic of Sexual Fantasies (2002) offers a contemporary, adaptive view of the erotic imagination. He represents a clinical shift away from treating fantasy as a sign of pathology. Bader argues that fantasies are creative psychological “solutions” that help individuals overcome unconscious fears and inhibitions. This perspective supports Perel’s argument that fantasy is a vital and healthy component of sexuality. Bader’s work underpins her call for what she terms erotic “ruthlessness”—a sanctioned self-absorption in pleasure that is necessary for arousal but often feels threatening within an intimate relationship.

Ethel Spector Person was an American psychiatrist and psychoanalyst at Columbia University who was a leading voice on romantic love and fantasy. Her work, particularly Dreams of Love and Fateful Encounters (1988), validates Perel’s focus on the psychological significance of passion, treating it as a profound expression of identity and longing rather than being frivolous or immature. Person’s exploration of the interplay between power, gender, and desire in relationships informs Perel’s analysis of how these dynamics manifest in the bedroom. She provides a psychoanalytic and feminist lens for understanding how control and agency become eroticized.

David Schnarch was a clinical psychologist and sex therapist who developed Crucible Therapy, a model integrating marital and sex therapy. His most influential concept, cited by Perel, is “differentiation”—the capacity for an individual to maintain a clear sense of self while remaining emotionally connected to a partner. In his book Passionate Marriage (1997), Schnarch argues that this ability to hold onto oneself is crucial for reviving desire in long-term relationships. His work provides strong theoretical support for Perel’s central thesis that separateness is a precondition for connection, creating the space across which erotic energy can travel.

Helen Fisher was an American biological anthropologist at The Kinsey Institute known for her research on the neuroscience of love. She popularized a model that distinguishes three distinct brain systems: lust (the sex drive), romantic attraction, and attachment. Fisher’s work provides empirical, biological support for Perel’s more psychological and cultural analysis. By outlining the different neurochemical drivers and evolutionary purposes of these systems, Fisher helps explain why the deep attachment and comfort of a long-term relationship (driven by oxytocin) can suppress the novelty-seeking drive of romantic love and lust (driven by dopamine). Her research offers a scientific rationale for why desire naturally ebbs under the domestic pressures of parenting and long-term partnership.