The Love Hypothesis

Ali Hazelwood's debut novel, The Love Hypothesis, follows Olive Smith, a third-year Ph.D. candidate in biology at Stanford University who is determined to prove to her best friend that she is over her ex. In a moment of panic, she impulsively kisses the first man she sees: the intimidating and notoriously grumpy professor Adam Carlsen. To her surprise, Adam agrees to play along, and they enter a fake relationship that benefits them both. But as their arrangement continues, the line between pretense and genuine affection begins to blur.

Originally published online in 2018 as Head Over Feet, a Star Wars fan fiction centered on the Reylo pairing (Rey and Kylo Ren), the novel underwent significant revisions before its official release. Berkley Books published it on September 14, 2021, with 384 pages. The story blends academic ambition with romantic tension, set against the backdrop of competitive scientific research. Hazelwood, herself a neuroscientist, brings authenticity to the portrayal of graduate school politics and the pressures women face in STEM fields.

The Love Hypothesis became a viral sensation on BookTok and other social media platforms, praised for its witty dialogue, slow-burn romance, and the chemistry between its leads. It launched Hazelwood into the spotlight as a leading voice in contemporary romance, particularly for stories featuring smart, career-driven heroines. The book's success also highlighted the growing trend of traditionally published works originating from fan fiction communities, sparking conversations about the legitimacy and creativity of transformative works. For readers seeking a feel-good romance with substance, this novel delivers both heart and humor. [edit]