Cat Johnson has been badly burned in the past and likes to keep her relationships simple and, usually, short. When her best friend, Nat, gets engaged, Cat meets Nat's future brother-in-law, Patrick Hart, and sparks fly. The only hitch is his fiancee, Anya. Angry and disillusioned, Cat spends the next six months trading barbs with Patrick.

All that changes after Nat and Aidan get hitched. During the newlywed's two week honeymoon, Cat offers to housesit, only to discover her now-single arch nemesis is living next door. He's persistent and sexy-as-hell in his pursuit of her and Cat discovers there's more to like, maybe even love, about Patrick Hart than she once thought. She wonders if she can trust this man with her heart or too afraid to try.