Mia Murphy may be married to the man of her dreams. But the man in her dreams is the one that got away-her high school crush. Mia's stuck in a rut, just like every other stay-at-home mom, and the only thing saving her from her monotonous routine is her perfect husband, Declan. He's gorgeous, he adores her, and the man stole her heart with his sexy singing voice. Mia feels like the luckiest girl in the world, until she discovers that Mr. Perfect is not Mr. Faithful. Mia is devastated. Everything she once believed about Declan and their marriage is now covered in a big cloud of doubt and regret. On impulse, she kicks the cheating bastard out, pushing them into a separation that could mean the end of the picture-perfect couple. But when Mia receives an invitation to her high school reunion, she finds herself abandoning the present for the oh-so alluring pull of the past. Although her heart still belongs to her husband, inescapable thoughts of her crush, Noah, resurface. And ten years later, Noah isn't afraid to make his move. When the build-up of fantasies and 'what ifs' comes to a head, sparks fly and it's Mia's turn to question if her marriage is everything she wants out of life. Searching for answers, Mia dives head first into dating Noah, falling further away from her husband and closer to her old flame. But Declan's not giving up so easily. Mia is his one and only and he's not about to let another man win her heart.