Young Nympho(1986)

Paula and Chris have been married already for a few years. Although they love each other very much, they both need extramarital affairs and the torrid sexual sensations obtainable through Arlette, a mysterious lady in charge of a high class private swinger club. Insatiable Paula induces her husband's secretary, Carrie, a gorgeous teenage girl, to submit an erotic ritual with several men and with Chris. Paula watches behind a two-way mirror, enjoying an orgy with the sexiest girls in the business. Will the marriage last?