La Notte (1961)

Giovanni and Lidia have been married for several years now and their marriage has become a functional arrangement, devoid of love--and any other emotion. They go through the motions but barely care anymore. After visiting a dying friend, their time together is filled with long silences. Lidia visits a neighborhood where they once lived but little has changed there. At a party that evening, Giovanni spends time with a beautiful woman and Lidia spends time with a playboy. The party goes on all night, and by the next morning, Giovanni and Lidia start to try to work out their difficulties.