We have told no one.... except for those that we play with. They seem to be able to keep their mouths shut or open depending on the situation.
All kidding aside, it's been said why tarnish anything with our loved ones. As for friends, we have friends in both the vanilla world (those that aren't told) and those in the lifestyle (those that are told). Like virtually anything else, some people know some things about us and others don't.