I hate to go against what everyone else was saying but I do see a problem. It’s all too easy for people who are in the “Lifestyle” to think that others have or should have the same views on sex – marriage – and relationships that they do. Not everyone is in the lifestyle and not everyone wants to be in it either!
Ronnie, you have every right to approach this “Meeting” with caution. I would like to tell you that swingers and people in open relationships are always on the “Up and Up” but in truth they can be just as sneaky and underhanded as their vanilla counterparts. More than likely he is thinking about a 3some with you and his wife. They’re in an open relationship and I assume that you are having sex with him, so his next logical step would be to have you join in.
There’s nothing wrong with joining them, assuming that is something that you want, but from your post, at least at this point it’s not, and there is nothing wrong with that. I am also concerned about the “he doesn't want her to get jealous” comment. While I understand what he might be saying here, you two go back a long time and this may bother some other women, however it doesn’t sound like he has been completely upfront about something or there would be little reason for his wife to be jealous.
In my opinion which is really hard to offer without a lot of follow-up information, I would pass on the meeting. It doesn’t sound like this is something that you are ready for. You are not obligated to meet his wife or join in their lifestyle and if the situation makes you uncomfortable you probably shouldn’t do it.
If you decide that you want to meet her I would say to him before you go that you have no intentions of joining him and his wife in a 3some and that you expect no advances to be made in that direction. That will at least remove that part of the issue at least for the initial meeting. You can of course, should the moment overtake you, change your made and join them, if that’s what you want.. But at least you laid out the rules beforehand so that you don’t get pushed into something you are not ready for. Some lifestyle people can be pretty pushy at times.
Hope it all works out!