My wife (37f) and I (36m) have had her mother (62f) living with us for the last couple of years since my father-in-law passed away. My wife and I have been married for just over ten years, and I have always considered myself lucky with the in-laws that I had. Unfortunately my FIL was always a workaholic, which probably led to his early passing.

Anyway, my wife and I always sensed that as a possibility and even early on in our marriage talked about her mom living with us if anything should happen. The last couple of years have been fairly stable, and since we had a spare bedroom in the house, having my MIL move did not require a huge adjustment on our part.

This brings me to last Saturday morning. I was up a bit early tinkering around in the garage. My wife and MIL like to do a short walk/hike every weekend, so I usually have the morning free to myself. Eventually I heard them come back, and as usual they went to shower off. My wife has always been super comfortable around her mom, and they would often be naked around each other (I was never present for it). I don’t know how common that is in other families, but my wife spent a lot of time in Japan where that is fairly common place. I never got a hint of things being at all sexual between them and thought nothing of it when they would shower together.

Anyway, eventually I came inside, and soon after my wife came into our bedroom, wrapped in a towel. I could immediately tell something was off, and that she wanted to talk about something. She was a little hesitant at first, but eventually she took my hands and looking into my eyes asked, “Would you make love to my mother?” At first I thought I misheard or misunderstood, but she then repeated herself. My mind was kind of a limp noodle once I realized she was serious, so she proceeded to tell me about what had transpired on their walk that morning.

Apparently somehow the topic of sex came up, and my MIL lamented that she hasn’t had a satisfying sex life even when her husband was alive. He was so wrapped up with work, spending most weekend in the office, that he rarely had any time for her. My wife had jokingly said that maybe she’d want me to take care of her needs, and although they both treated it as a joke in the moment, it apparently sent my wife’s train of thought onto it. My wife said that while they were showering she realized that she would gladly see her mom be fully satisfied as a woman, and she also realized that she would not be upset if I was the one to do it.

Needless to say, hearing all this kind of sent my head spinning. We’ve had a pretty good sex life, but nothing wildly out of the ordinary. Hearing all this from her was absolutely shocking, but I also realized that I wasn’t revolted or repulsed by what she was saying. I had never really thought of my MIL in a sexual way, although I had briefly seen her topless once when she walked out of the shower not realizing I was back early from work. Eventually I asked what her mom thought of this. My wife said that eventually, once the shock of realizing she was serious about her proposition once she brought it up in the shower, her mom was certain there was no way that I would be interested in her at her age. Therefore, if we called her in and I told her that I wanted it to happen, she would probably be open to it.

I honestly don’t know how long this conversation between my wife and me lasted, but once I realized that my wife was serious and that I was also ok with the idea, I agreed to have her call my mother-in-law. The next couple hours after that have completely upended our relationship, both between me and my wife and also her mother. I don’t know how detailed you guys would like me to get, but if you guys are interested I can try to describe the rest of that day.

One thing that I find surprising in hindsight, is how intensely intimate I felt with my mother-in-law and also my wife. If anything, thinking about what transpired just floods me with a feeling of absolute love for both of them. I’m not sure what the next few days, weeks, or months are going to look like, but I’m positive they are going to be like nothing I would have imagined that morning.

Apologies for how long this has gotten. I’ll try get back on at some point to answer any questions you guys may have. Or if you have had a similar experience, feel free to let me know how it happened and what the ramifications were. Thanks all!