All Ladies Do It (1992)

aka's: Cosi Fan Tutte/All Women Do It/The Filthy, Disease-Ridden Whore Who Screwed All Of Italy

Diana (Claudia Koll) is happily married to Paolo (Paolo Lanza), but due to her extroverted character, she regularly winds up in short-lived adventures–which she doesn't keep hidden from Paolo. On the contrary, by telling him, their sexual relationship is fueled with fresh impulses. When Diana experiences a stormy affair with the poet Alphonse–who is obsessed with female bottoms–Paolo gets jealous after all. He resents Diana, who responds by indulging in a series of sexual excesses with her sister and some friends. After a particularly rough house party, however, Diana returns to Paolo. (In Italian language with English subtitles).