Stay as You Are

Così come sei is a movie starring Marcello Mastroianni, Nastassja Kinski, and Francisco Rabal. Stuck in a dysfunctional marriage, a middle-aged architect has a chance encounter with an alluring student, and begin seeing each other....
A May-December romance. Roué Giulio Marengo, a Roman landscape architect unhappy in his marriage, meets Francesca, a young and beautiful Florentine, and then learns she might be his daughter. He resolves to keep his hands off but can't seem to stay away, and she's eager for a lover who's a father figure.