Stay as You Are (1978)

Stuck in a dysfunctional, suffocating marriage, middle-aged landscape architect Giulio has a chance encounter with fresh, alluring Florentine student Francesca. The physical attraction between the two strangers is as fascinating as it is irresistible--Giulio feels how it is to be loved and be young again; Francesca yearns for a meaningful relationship, and to experience the safety of true love. As a result, more and more, Giulio feels the insurmountable need to see the young seductress again and again, despite Francesca's connection to an old flame. Could Giulio be Francesca's missing father?