Help with softcore lesbian scene from late 90´s, early 2000's

I remmember vividly a softcore lesbian scene on a movie, it starts with a group of friends talking about the sex life of a couple, when one of the girls starts talking about how the woman in the relationship discovered her sexuality on a massage table with another woman, the straight couple leaves and just the storyteller and another woman talk about the encounter a little further,right when they finish walking both women had sex with each other on a white sofa, I remmember that the massage table scene was taken from another movie because both the actress do not appear on the movie since that scene, can somebody remmember that movie or has a link to that scene in particular?