Flirtatious MIL

I’ve been with my wife for 10+ years. Her mom has always been extremely kind and also very open about anything sexual. At first it made me uncomfortable how open they are as a family, as I come from a very conservative one, but eventually I got used to it and it’s just common talk now.

Recently I switched jobs and we moved to the same town as them, and while we were looking for a place we stayed with them.

There’s been a few instances where I know she’s caught me looking, like in the morning when I’m getting ready for work and she comes downstairs in just a robe, loosely worn, and sits on the couch chatting. She’s never said anything but I know she know what she is doing.

The other week things got a little bit more heated.. I was soaking in the hot tub late one night, thinking everyone had gone to bed so I didn’t bother with shorts.. as I’m relaxing I hear someone come out, it’s my MIL. She said she heard me and decided a hot tub sounded nice.

So she hops in the hot tub with me. As she was getting in my dick got instantly hard.. she is 60 but she has a very nice body for her age, and her bathing suite choice was extremely flattering.

So I’m sitting here awkwardly with a rock hard cock chatting with my MIL when she asks if I can grab her a drink from the garage fridge. At this point I tell her that I’m skinny dipping. She just laughs and says it’s ok she won’t peak. So I hop out, go grab a couple drinks, and come back to her bikini sitting beside her towel. She says that usually she goes in naked and was glad I was too so she could. For a while I tried hard to keep it light and causal conversation but she could clearly tell I was nervous. She laughed about it and told me it’s “only skin” and that maybe it would be better to just get the looking out of the way, then proceeds to stand up and do a little spin.. which got my cock rock hard again.. then she asks me to do the same thing. Feeling brave from the alcohol and her boldness I do the same thing, not even hiding my stiffness.

I can see her stare down at my cock before I sit back down. She didn’t mention anything and continued on with casual conversation but I could see her hands/arm moving under the water.. this made me start stroking myself as we continued to chat. Neither of us acknowledged it but we both continued to masturbate as we chatted, gently playing footsies as we did. Eventually while talking she let out a big moan and closed her eyes, and that was it for me and I blew my load in the hot tub. She smiled and got out, grabbed her towel and said good night to me. Neither of us mentioned anything and she is still flirty but I feel that is as far as she’s willing to go, and honestly it’s further than I thought I was ever willing to go either.