Swedish Porno: Forest of Beastly Desire(1971)

Catherine, an ordinary housewife living in a Swedish port town, has various experiences. She breaks up with her lover Andrea, lives a bland married life with her husband Bertrand, is seduced by her husband's friend Michelin, and has a relationship with her husband's mistress Linda. Despite these trials, she tries to maintain her love for her husband and ends her life as a woman...