Just Add Friendship by Heather B. Moore

Ten years of dating since he left. Ten years of nothing working out. Is it her, or is it him? Or can no one else measure up?
Stephenie Grady can’t figure out why every man she dates turns into a troll, well, not an actual troll with green skin and warts, or the kind of troll who stalks the internet with negative comments, but the kind of troll who dumps her. Yes, she’s been dumped every time, by every guy she’s dated. She’d blame it on the male population, but her girlfriends have amazing men in their lives.
Steph could also tell herself she hasn’t met the right man yet, and that could be true, but what if she already has? What if the right man was in her life ten years ago, and what if he comes to their ten-year high school reunion? And what if her memories of a past relationship don’t measure up to the realities of the boy-turned-man, Cal Conner?