I've been having sex with my mother in law with my wife's blessing

My wife and I have been nudists since we got married.

We started with the curiosity of going to a nude beach together and fell in love with the clothes free lifestyle.

We have dabbled over the years in swinging too.

Been to a few resorts and parties and have a great time, and we've also had some friends with benefits over the years.

But it's something we do casually and not something we're hardcore into.

About 5 years ago my wife's father passed away, and my mother in law has been moving on with her life but is not interested in dating anyone. She's in her late 60s and is tall with an average body. She has worked out and stayed active over the years so she still looks good.

She has known that we're nudists for almost as long as we've been practicing. After her husband passed away, we were talking about an upcoming trip my wife and I were planning to a resort for a weekend and she started asking a lot of questions about the place. My wife's parents had been to nude beaches and weren't offended by nudity, even if they didn't label themselves as nudists.

She said she might be interested in visiting the place one day but would need to find someone to go with. My wife and I talked it over a bit and while it seemed weird to go spend three days with your mom completely naked, we also didn't have a strong objection to it.

So we told her she would be welcome to join us if she wanted to, and she thought about it for a day or two, and basically said the same thing we did. It sounds weird, but she also didn't have a strong objection to it.

So...we went. And it wasn't really weird. As I said above she has a decent body for her age and we spent the time at the pool, having drinks, and just enjoying a relaxing weekend. Even if we were staring at each other's naked bodies the whole time.

There wasn't anything sexual about it...until the last night we were there. We were smoking a joint together outside our rooms and just talking. We were asking about if she was interested in dating again and she was saying no, she really wasn't interested in it.

The next part was born, I suspect, entirely out of the intoxication. She basically said she just needs to get off now and then. She doesn't want to try any of the hook up apps or anything, she would just want someone to come over, service her, and leave. No strings attached.

I say entirely out of intoxication because we've never heard that level of detail about her sex life before. But then again, I was staring right at her naked body the entire time while high, so tonight was apparently a new chapter.

My wife basically admitted we had messed around in the lifestyle to her stunned mother and that we don’t really view sex with other people as anything more than a fun recreational activity. She asked a lot of questions and it was a little weird because I got hard, to the delight of the two ladies who giggled at how excited I appeared. Admittedly it was all very awkward to openly discuss, while nude, whether or not I could or should fuck my wife’s mother. But her mom did seem to get more intrigued after another drink and a couple more puffs, and we all agreed to sleep on it and think about it later.

The next weekend my wife got a text from her mom asking me to come over and help her with a couple of things around the house, which was not unusual, and that she would take me up on the offer if it still stood. My wife and I talked about it, I got hard thinking about the fun we could have, and texted her mother that I’d be over in an hour.

As I left to go to her mom’s house, my wife slapped my butt and said “Go get ‘em tiger!”

So I went over there and rebooted her internet router and filled up the tires on her car. We opened a couple of beers and chatted for a bit. She then put some music on, said she’d be back in a few minutes, and disappeared to her bedroom.

She came back out wearing nothing but a robe, took my hand, and walked me back to her room.

I took my clothes off, she dropped her robe, and we got down to it. It was honestly some really good sex.

Since then I go over to her place a couple of times a month like I usually have to help her with some things around the house and then we’ll have sex. Turns out she loves oral and we’ve even done anal a couple of times. My wife doesn’t really want to know all the details for obvious reasons, but she knows generally what we’ve done and doesn’t have a problem with it.

Nothing has really changed in the relationship with my mother in law. We know it’s purely a sexual thing and it’s just to get each other off. There’s no jealousy or feelings involved. It’s been nice to get to know her so intimately and to keep her happy and satisfied.