Nav knows how to flirt, but she also knows love is a messy losing proposition. As proof, her best friend, Hallie, is constantly getting her heart broken. And when Hallie goes to her boring academic camp this summer, Nav won't be there to protect her for the first time in their lives. So when shy new girl Gia asks Nav for help getting Hallie's attention, Nav finds a way to make it work for her. In exchange for lessons in romance, Gia, whose mom runs...