Private Pleasures (1985)

Join Asian beauty Mariko as she secretly watches real-life lesbian lovers Teri and Caerage engage in a classic butch/femme seduction scene. Few couples know each other so completely, desire each other so thoroughly, and are so sexually comfortable. In a ritzy penthouse apartment, they dress up for each other's pleasure, then pop champagne, lick off the whipped creamed, and end up on the floor in a fucking scene that will astonish you.