The Voyeur(1994)

Original title: L'uomo che guarda

At a college in Rome, a professor, nicknamed "Dodo" is in a deep depression. His stunningly beautiful wife has just left him for another man. Dodo wants her back very badly and has erotic daydreams about her. A beautiful young student in his class asks him for a ride home and seduces the lucky man, but still he wonders about his wife and her lover.