I am a male married to a woman. My wife has a co-worker who is lesbian and married to a woman. They don't work in the same area but became friends over the last year. During that time, we've gone out to drinks and dinner together with the other couple. They are seriously a lot of fun and I genuinely enjoy hanging out with them as they have us laughing hysterically every time we've been out with them.

We feel very comfortable around them and have gotten into more personal conversations with them. Over the years, my wife and I have dabbled in swinging. We don't go to clubs or parties or anything like that, but it's something that happens usually when we are on vacation. My wife has told her friend about this before and it's gotten brought up in conversation with this other couple.

At the beginning of December, we went to my wife's holiday party and hung out with the two women a lot of the night and after we went out to a bar for drinks together. After enough alcohol, my wife's co-worker and her wife brought up the swinging thing and started joking around about how my wife should give swinging a try with them. The context of the joking was her joining them by herself, not involving me. I took in stride and was trying to be good natured about it, but I think the co-worker sensed the suggestion caught me off guard and finally shut it down, but finished by saying something along the lines of "nah, it's not a good idea. Besides, once she had a night with us, she might not know what to do with herself."

For the record, in our swinging experience, my wife has been with women before, so it's not a foreign thing to her.

After that evening, my wife has brought it up to me and I could tell she was very fascinated with the idea. I could tell she was obsessing over it a bit, and on top of that, I know she's always found her co-worker attractive. She asked me what my feelings about it would be if it ever came up, and I let her know that while I wasn't expecting something like that, I told her if she really wanted to, she's her own woman and I didn't see any harm in it and I could probably get comfortable with the idea if it was just for fun and provided it was with both of them and not one on one.

Monday of this week, she went out for drinks with her co-worker before everyone took off for the holidays and she mentioned the comment to her friend and asked if she was joking that night. My wife said she kind of tried to play it off a bit, but finally basically told her anytime she wants, the offer is there. Co-worker friend was concerned about my feelings because she made it clear they would only be interested in my wife joining them, but they didn't want to hurt our relationship in any way. My wife let her know that she had already asked me about it and that I didn't have an issue with her having an evening of fun with them.

So, here we are, and I can tell my wife is all ready to go full speed ahead.

I'd appreciate input especially from anyone here identifying as lesbian. First off, when we've done things with other couples, it's always been together. We've never gone off alone. I will admit, I have some anxiety over this, but I feel like they know us well enough and respect us enough that they will truly limit this to something fun without doing anything that would impede on our relationship.

If she goes through this, I'm open to any advice lesbian women here have on how I can keep things normal with our friends? I'll also admit, I'm jealous I wasn't invited to participate, but I get it and I'm not making an issue of that with my wife. Any input on how I can put myself in their shoes and navigate this without being the awkward guy would be helpful and appreciated in advance. Thank you.