The Mistake (Bad Bridesmaids Book 1) by Noelle Adams

Amanda Griffin has made a mistake. Or maybe a long series of them.

First, she gets drunk at her sister's wedding and shares all her guilty secrets with Robert Castleman, the worst possible man. Then, at her cousin's wedding, she ends up in bed with him.  At her best friend's wedding, they have a big, embarrassing fight. And then she gets stuck with him on the world's most annoying road trip. Her heart has always belonged to a man she can never have, so it's not like she'll ever fall for Robert. It's just that she can't get away from him, and now she's not sure she wants to.

Robert has lived his life watching from a distance and never investing in relationships that will end up hurting him. So the last thing he should do is hook up with his niece's best friend. She's too young. Too beautiful. Too clever. And already in love with someone else. But since he can't keep his hands off her, he'll at least be smart with his heart. After all, it would be a huge mistake to let himself fall for her.

But it's a mistake he can't help but make.