Joint American/Euro effort which looks as if it was made at about the same time as Lust Italian Style, but unfortunately Marilyn Jess is not in this one. However Colleen Brennan, Nina Hartley, Porsche Lynn and Lynn Armitage are.
Lynn Armitage is the wife of Joey Silvera and they visit a sex club where one's fantasies can be fulfilled. Joey isn't bothered about his wife's needs and she has to watch him having his way with a couple of girls. But she tires of this and goes off with John Leslie, telling him she wants to have a man and she wants her husband to watch. She then does - anal and facial. Joey gets to see a recording of this later. That's the British interest, but I most enjoyed watching Colleen Brennan's scenes.