We look for friends in the lifestyle. That is our preference simply because when we get together in a vanilla situation with them we can still really be ourselves. When your with co-workers or family you have to suppress the real you in a way. Our first couple that we got involved with in the lifestyle use to have us at their house all the time with vanilla friends, family, etc. We'd get together with our kids, just like you would with anyone else but then we'd get together and play games that turned "naughty"
and went away for the weekend for a play time.
I think it depends on your preference but we do try to develop friendships with our playmates outside of play. It seems to be more difficult to get a sexual match and an activity match. You'll find a great couple that the play is really hot but then you'll have nothing in common as far as things you like to do. So if you find someone like that I'd say take advantage and develop the friendship.
Mrs Spoomonkey