Bibi Andersson,Sandrine Dumas in Twee Vrouwen (1979)
Woman (Laura) falls in love with girl (Sylvia). They have an affair, but suddenly Sylvia runs off with the ex-husband of Laura. Laura can't understand why, but Sylvia doesn't want to talk to her. Later it becomes clear why Sylvia did this and then it is the ex-husband to be upset. He takes revenge. 110 min