Five summers. A secret love. One sparkling reunion.   Thirty-three-year-old Becc Reardon has tried hard to forget the all-consuming relationship that upended her life one summer in college. But when a mutual friend’s wedding means road-tripping up the California coast with a man from the past, she can t resist one last chance at a reunion.   From gorgeous beaches to quaint hotels, each stop along the way is a reminder of their memories together—the infinite nights at bonfires, the sneaky midday movie sessions. And soon enough, Becc is happily speeding beside the ocean waves with the funny, adventurous person she used to love and wondering what the future holds beyond the weekend.   But when the pair unexpectedly arrive at the location of their long-ago flameout, old heartbreaks flood back, and Becc will have to decide if those dazzling hours they once shar