Emma has known Adam since first grade and has been in love with him all her life. They are best friends and spend all their time together, they even jokingly call them M&M's. Perhaps Emma's feelings are mutual? Lily suffers greatly due to her parents' divorce. To drown out the pain of loss, she goes to Italy, where she meets a charming artist named Adam. Can a fleeting acquaintance turn into true love? By the will of fate, Lily and Emma become stepsisters. Now between them they have one home, one friends... and one love. A flash of passion or a time-tested feeling? What will each of them choose?