In 2013, 23-year-old Molly Diamond is a barista, dreaming of becoming a writer. One night at a concert in Brooklyn, she locks eyes with the lead singer, Jake Danner, and can’t look away. Molly and Jake fall quickly and deeply in love, especially after he writes a hit song about her that puts his band on the map. Nearly a decade later, Molly has given up writing and is living in Flynn Cove, Connecticut, with her young daughter and her husband, Hunter. Their life looks picture-perfect, but Molly is lonely. When Sabrina walks into the yoga studio where Molly teaches and confesses her own fertility struggles, Molly believes she's finally found a friend. But Sabrina has her own reasons for moving to Flynn Cove and befriending Molly.

Skye Starling is overjoyed when her boyfriend, Burke Michaels, proposes after a whirlwind courtship. Though Skye seems to have the world at her fingertips, she’s also battled crippling OCD, and her romantic relationships have suffered as a result. But now Burke says he wants her. Forever. But Burke isn’t who he claims to be. And interspersed letters to his therapist reveal the truth: he’s happily married and using Skye for his own, deceptive ends. In a third perspective, set 30 years earlier, a scrappy 17-year-old named Heather is determined to end things with Burke, a local bad boy, and make a better life for herself in New York City. But can her adolescent love stay firmly in her past --- or will he find his way into her future?

Lucy Albright is far from her Long Island upbringing when she arrives on the campus of her small California college, and happy to be hundreds of miles from her mother, whom she has never forgiven for an act of betrayal in her early teen years. Quickly grasping at her fresh start, Lucy embraces college life and all it has to offer. And then she meets Stephen DeMarco, who sees something in Lucy that no one else has. Meanwhile, Stephen is determined to forget an incident buried in his past that, if exposed, could ruin him. Lucy knows there’s something about Stephen that isn’t to be trusted. Stephen knows Lucy can’t tear herself away. And their addicting entanglement will have consequences they never could have imagined.