While You Were Sleeping (1995)

Lucy Moderatz, a charming but shy token seller, spends her evenings home alone with her cat and her holidays working for the Chicago Transit Authority -- she has neither family nor boyfriend to keep her company. But she does have a secret crush: sexy Peter Callaghan, a regular customer who has never even given her a second glance. One day, Peter is mugged on the subway platform and falls in front of an oncoming train. The courageous Lucy jumps down onto the tracks and pushes him to safety, but the ordeal leaves Peter in a deep coma. Lucy remains at his side in the hospital until his family arrives -- at which point a confused nurse, who misunderstood one of Lucy's comments, informs the Callaghans that Lucy is Peter's fiancee. And Lucy just can't manage to set them straight. But now she's beginning to fall in love with Peter's handsome and kind brother, Jack, and has one big problem: what will happen when Peter wakes up?