Two decades ago, Erin Edwards was sure she'd already found the love of her life - Nate Lawson. Her first love. The one with whom she shared everything. The one she thought she would spend the rest of her life with. Until one terrible night when Erin made a mistake Nate could not forgive and left her to mourn the relationship she could never forget or get over. Today, Erin is contentedly involved with a phenomenal guy, maneuvering a successful and exciting career, and raising a great daughter all on her own. So why would the name 'Nate Lawson' be the first thing to enter her mind when her boyfriend asks her to marry him? In the wake of the proposal, Erin finds herself coming unraveled over the past, and the love she never forgot. The more she tries to ignore it and move on, the more it haunts her.