Back when I lived in San Diego I met and partied with a lot of married couples. Several times the guy was bi, but I never did anything to him. One time when I was licking her pussy, he started giving me a blowjob. I stopped him because I was interested. Years later with masturbation as my only outlet, I probably would feel different about pursuing my bi-curious evolving side. I would only be into getting and giving handjobs and oral.
When I had the opportunities twenty years ago, I didn't act on them. Now I think I would really enjoy partying with a married bi couple. Recently I have been fantasizing about meeting a hot bi female at Blacks Beach and participating in a bi ffm threesome and bi ff bimm foursome. It led to a fantastic masturbation session last weekend. For me I would just do handjobs and oral.
The OP hasn't been here for a while. Pity. I'd enjoy hearing about his progress. Hope he's simply too busy fucking couples to spend time online! I recommend threesomes with a couple to everyone, man or woman or transgender. They can be outta this world sublime! My preferred dating is with a couple. Incredible sex!
If a married couple invites you to enjoy sex with them, and you find them both attractive, they seem decent, fun and not psychos, then hell yes, I'd go for it. Absolutely!
My wants for threesome would be wife and me in pantyhose and heels having some fun with nice shaved muscular blk fella . Me being a sissy as well taking it.