Rosie Dunne and Alex Stewart are long time best friends. On her eighteenth birthday they kiss even though she was drunk and doesn't really remember it.Rosie and Greg have a one night stand resulting in her getting pregnant, halting her dreams of studying in Boston with Alex. Alex goes on to Boston with Rosie not telling him about the pregnancy. One day Alex asks Rosie to visit him in Boston. Rosie goes there but at the end leaves angrily because she thinks Alex is using her as a distraction from his own life, including his forthcoming child with his girlfriend Sally. A few years later Greg walks back into Rosie's life and she gives him a chance, so they get married. Alex learns about the marriage but he also separates from Sally due to Sally having an affair.Alex reaches out to Rosie asking if she's happy with Greg, but his mail is intercepted by Greg.