Don't Know How To Feel About It, Need Help

This site has become a place where people post made up erotica or dreams they wish were true, so let me start by pointing that I'm not one of them. I'm not here to boast about what I'm going to write or to jerk off reading it later.

That said, this is what you need to know in advance:

● My wife (F29) and I (M40) have been married for 8 years now;

● We have an open marriage and have sex with other people as a couple (going out alone with someone else isn't an option - keep this in mind);

● She has 2 sisters - "F" (25) and "J" (34) - and I was never sexually attracted to any of them;

● Couples talk about stuff and one time, about 4 years ago, we were talking about boundaries and who we could f*ck or not, and my wife said, "I think I wouldn't be okay seeing you f***ing one of my sisters, but you know I have no fixed restrictions." (Keep this in mind);

● We all know women talk among themselves about what they do sexually with their husbands and what they like about it, right?

● No, I'm not muscular, extremely handsome or well endowed; I'm an average guy in every aspect.

Jump to Christmas Eve 2024...

We always throw our family's Christmas party and a few people always come. Her sisters are regulars ever since we met. After a few drinks, the girls were talking about boyfriends and stuff, as usual.

A few minutes later I went to our suite bathroom and when I came back, "F" was leaving our guest bathroom. She was laughing and looked at me and said, ""T" (my wife) was telling us she's not very into an*l and that you like it a lot more than she can get herself to let you do it... She's crazy, I do it and I love it, my man deserves all of me." I laughed and commented on it, but that was all.

Jump now to New Year's Eve...

As usual, we also throw the New Year's Eve party. I like to party, but I also like to have a little quiet time, so I frequently go to our bedroom and watch a few minutes of TV or some streaming app before I go back to the party.

At one point, "F" went to the room and asked to use our bathroom because someone was using the other and she needed to piss real bad. Our bathroom has a glass door, but I didn't mind, since the door is away from where I was. After she was done, she came to me and asked what I was watching and stuff, and then said, "what I said last week about an*l was true, you know... I could do it in the guest bathroom right now, if I had a guy with a hard c*ck to breed my ass..." I think I prefered not to understand what she was proposing and attibuted it to "booze talk".

The night went on, midnight came and we all hugged and wished a Happy New Year to each other. "F" seized the opportunity to say in my ear, "the guest bathroom is empty now." Again, I think I tried to ignore it.

Party's over, everybody's going away, she hugs me and says to my ear, "I'm always home after six." My wife and I go to bed, stuff starts and we f*ck. True, she doesn't like an*l, but lets me do it sometimes, but I think I went in too hard and she said, "Take it easy, I'm not "F"!" She didn't sound mad or aroused, it seemed like just a nod to all the sex talk they do.

Now, my question to all who read up to here and have a constructive comment to do on what I'm going to ask next:

Should I tell my wife?

If yes, should I just tell what happened or put it like it's something we could try sometime?

If no, should I try to forget about it or visit "F" after six?