A competitive diver and an ace swimmer jump into forbidden waters in this steamy college romance from the Sunday Times and New York Times bestselling author of The Love Hypothesis. Scarlett Vandermeer is swimming upstream. A Junior at Stanford and a student-athlete who specializes in platform diving, Scarlett prefers to keep her head down, concentrating on getting into med school and on recovering from the injury that almost ended her career. She has no time for relationships - at least, that's what she tells herself. Swim captain, world champion, all-around aquatics golden boy, Lukas Blomqvist thrives on discipline. It's how he wins gold medals and breaks records: complete focus, with every stroke. On the surface, Lukas and Scarlett have nothing in common. Until a well-guarded secret slips out, and everything changes. So they start an arrangement. And as the pressure leading to the Olympics heats up, so does their relationship. It was supposed to be just a temporary, mutually satisfying fling. But when staying away from Lukas becomes impossible, Scarlett realizes that her heart might be treading into dangerous water...

Ali Hazelwood is the New York Times and Sunday Times bestselling author of The Love Hypothesis, Love on the Brain, Love Theoretically, Check & Mate and Bride, as well as a writer of peer-reviewed articles about brain science, in which no one makes out and the ever after is not always happy. Originally from Italy, she lived in Germany and Japan before moving to the US to pursue a PhD in neuroscience. She recently became a professor, which absolutely terrifies her. When Ali is not at work, she can be found running, eating cake pops, or watching sci-fi movies with her two feline overlords (and her slightly-less-feline husband).