On episode 6 of Playboy TV's Swing Season 3, Lisa and John join the Swing House.
See Them Swing! http://hotshowsonline.com/shows/Swing.html
They've known each other since youth and have been happily together for nine years. They say their sex life is amazing, but really want to push the boundaries of pleasure.
Lisa is also bi-curious, and while they have experienced threesomes before, the girls never interacted with each other much. Lisa is ready to stop being so shy and get down to business. However, it looks like John is quicker to get some action, and he ends up licking a sundae off Nikki's ass.
You must see the whole episode http://hotshowsonline.com/shows/Swing.html