>> they were chat friends, chatting about the swinging lifestyle and that sort of thing. and david actually said, you need to meet my wife joan, and invited him to a swinging party. >> they all got together at a local hotel, just social that first time, no sex. >> there was a second swingers' party that both of the shannons and jeffrey attended. and at that party, he i think as well as others did have sex with joan. but after this happened, joan and jeffrey started seeing one another. >> that was okay, though, according to the rules the shannons had established, as long as it was just sex and nobody got romantically entangled. anyway, wilson was married with kids. there was no indication that his wife knew what he was up to on the side with joan. >> we started doing some one on one, is what they call it, when