I've written a response many times, only to delete it out of concern that my response would jeopardize an already very fulfilling hobby life. Hence the new handle, just created so I can maintain anonymity from my OTHER anonymous identity.
I do MFM sessions and gangbangs. Been doing them for years now. Any two guys tag teaming a lady already have shed their inhibitions to a considerable degree. After all, it's nearly impossible to DP a woman without there being some contact between dicks and/or balls.
But I've always wanted to take it to the next level. When I'm fucking a lady mish and she's got another guy's dick in her mouth, just inches away from my face, it's hard to resist just reaching over and helping her out.
I never do, though. I suppose I could ask, but there's always the fear that the provider or the other guy (mostly the other guy) will go apeshit. Once the genie's out of the bottle, there's no getting him back in. All the ladies and guys I play with now would hear about it and I could find myself uninvited to the next gangbang, or only invited to gangbangs with bi guys. No thanks.
But I do wonder what the provider would think if I ever did that ...