I've been trying to get a support group here in mid MO, and have had a few problems with people. For example one guy kept asking when we were going to have our first "all ->-bleeped-<-" orgy, every time he emailed me. He went into detail what he wanted to do, and was so graphic that, even if I could, I wouldn't be willing to describe. To each their own, but his expectations made me sick. I have no problem with lesbians and gay men, as I myself am bi. But the ones that seem to be hell bent on getting every STD they can, I don't have the patience for. I told him several times that, that wasn't what this group is all about. After many times of telling him to look elsewhere, he finally got the point and stopped emailing me.
So what I'm saying is if needs be, tell the person that the group isn't the place for such things, unless there is a mutual attraction.
The 5th of the 11 Satanic Rules Of The Earth says "Do not make sexual advances unless you are given the mating signal."
Maybe that could come into play here.
A rule on my forum may be transferable to your group:
14- Unwarranted sexual advances are not allowed. If you and another member want to meet face to face privately, and it leads to anything, then you proceed at your own risk. Just remember that this is not a hook up forum. I won't try to deny you the right to make your own choices, but I ask that you not try to look strictly for sex here.