Actually, Torpedo gave you some good advice ... check out the adult swing clubs in your area ... Northern California is full of them. I'll give you a link; check out their websites, call 'em for their "hospitality night" and go meet some people face to face. Females get in free, as well as couples, usually ... then you can swap names and hook up off site.Sometimes usually voice verify and talk on the phone a few times.
Here's a link to the swing clubs; just click on the state and it'll break down the clubs by locations:
http://www.swinglifestyle.com/swingers/clubs/