The Sextrovert (1970)

Philippe de Valmont, an important Banyuls wine producer, asks his friend Patrick, an attractive adventurer, to take care of Desirella, a cover girl very much in demand, who has an affair with her lesbian friend, Nicole. Patrick carries out his mission so stylishly that Desirella soon falls in love with him. Nicole, as for her, doesn't accept the situation. She is determined to seek revenge.