There was a scene I watched long ago where, in the living room I think, the wife watches her husband make out with the wife's female friend for a second. As the wife watches for a bit, she says, & I'm paraphrasing just a bit on the first sentence, "I can't I'm watching you two fuck like this." Immediately then as she takes her grey dress off, she gives a seductive smile as she says "I want in." & immediately joins in, making the scene a threesome.

Anybody know the names of the movie/scene &/or the pornstars?