The French Lieutenant's Woman (1981)

In nineteenth century England Charles, a paleontologist, is engaged to be married, but who falls in love with outcast Sarah, whose melancholy makes her leave him after a short, but passionate affair. Anna (Meryl Streep) and Mike (Jeremy Irons), who play the characters of Sarah and Charles, go, during the shooting of the movie, through a relationship that runs parallel to that of their characters.