Laura Moore, "Night Swimming"

When college offered an escape, Lily fled her hometown of Coral Beach and never looked back. Now a marine biologist, she must return there on a job to preserve the reefs that give the town its name. But going back means dealing with her past, her family, and worst of all, Sean McDermott. As teens, while Lily passed through an especially awkward phase, Sean—attractive and self-assured—was her constant tormentor. Lily doubts that things will have changed. But Lily’s awkward phase is long over . . . and though she finds that Sean still makes her blood boil, it’s for very different reasons.