Sex Is Beautiful (1973)

Married with two kids, beautiful Claire has everything to be happy. But her husband, a businesman, is often absent. When her kids go on a ski holiday Claire finds herself alone. Distraught, she goes out one evening with her friend Gisèle and meets a fashion designer, named Michel. Spark fly and Claire winds up getting seduced by him. Fallen in the trap of adultery: will the young woman be able to accept all her lover's fantasies?