Kristan Higgins 
My One and Only [EPUB ebook] 

Just when she thought she had life and love all figured out….Divorce attorney Harper James can’t catch a break. Bad enough that she runs into her ex-hubby Nick at her sister’s destination wedding, but now, by a cruel twist of fate, she’s being forced to make a cross-country road trip with him. And her new fiance back at home is not likely to be sympathetic.Harper can’t help that Nick has come blazing back into her life in all of his frustratingly appealing, gorgeous architect glory. But in Nick’s eyes, Harper’s always been the one. If they can only get it right this time, forever might be waiting-just around the bend."[S]weet, charming, and tender." -Booklist on The Next Best Thing