swinging

My man and I have wanted to branch out into threesomes with another female for a long time now. We have great sex and are not at all shy with each other... problem is, we're both a little shy when it comes to trying to find another female to join us. I don't even know where to begin... I know the internet can be a good resource for shy people and I have tried it some, but most women seemed turned off by the idea of joining a couple and I can never get any to agree to meet us. I have also tried to find women who might be interested on my own, but again most seemed turned off if I ever even mention the idea of letting my boyfriend watch or join.

Any ideas on how we might be able to meet women who would be interested in being our third? Places to go, lines to use?