If your wife is really serious about acting out some of her bi-fantasys and you have no problems with this, right here at Literotcia would be a great place to start... (Is she looking for a one on one with another woman? Or maybe a 3some with you involved?) Try looking here at Literotica for some women in your area who are also looking... (Or depending on where you live, maybe you could see if you have any alternative bars in your area and try meeting and making new friends...) I'm also a bi-married female and have found that both Literotica and alternative bars can be a great place to make new "open minded" friends...
Good luck!!
~~ XOXO Mystic XOXO ~~