What do you do when you attend an engagement party and discover your boyfriend is the one getting married? Lena Matthews thought the hardest part of her summer would be figuring out what came after graduation. She decides to attend her best friend's cousin's engagement party in another city so that she can surprise her long-distance boyfriend, Liam. Instead, she discovers he's the groom. Heartbroken and desperate to leave before anyone realises who she is, Lena is mistaken for someone else, a billionaire's secret fiancée. Marcus Hartley has spent months lying to his powerful family about the woman he plans to marry. When the actress hired to play the part never arrives, he mistakes Lena for her. By the time they uncover the truth, it's already too late. His family believes she's his fiancée, and walking away would expose the lie. He learns about her current financial crisis and offers her a deal. She pretends to be his fiancée for three months, and he'll make it worth her time. With her mother's medical bills piling up and her family's future hanging by a thread, Lena accepts Marcus's offer. There is only one problem. Every day she pretends to love Marcus, she has to watch the man who broke her heart marry another woman. But some mistakes become miracles. And sometimes, the man you were never supposed to meet becomes the only one worth fighting for.