Are your past lovers really in the past? Have you ever wondered 'what if'? Maybe had a look on Facebook? Marina has the life she always dreamed of. She is married to Mark, a gorgeous surgeon, writes a weekly column for a leading newspaper and lives in the heart of London. But working on an article about first love reminds her of Tom, her one-that-got-away, and she begins to feel that her life is not as complete as she had thought. When they are brought together by a friend, she realises that he still has the power to make her go weak at the knees. Marina finds herself struggling to choose between safety with Mark or new passion with her first love. Will it be London or Rome, husband or lover?