It started by pure chance, but still continues today

My daughter's mother-in-law 57 (mil & gorgeous) was at an out-of-town function alone, her husband was off playing golf. I am a widower 59 also attended it as my employer was promoting the event, so as my daughter's mil was there, we kept each other company. I'd planned to drive home after the function, but it had started rainy heavily and my road was closed by flood water. It comes up quickly and goes down just as fast once the rain stops. But this night it hadn't stopped rainy, so I would have to sleep in my car. But my daughter's mil had booked herself into a motel and was intending to drive home the morning after. Motels quickly filled due to the rain and that's why I was planning to sleep in my car. But my daughter's mil decided as her room had two beds, I could share with her. A comfortable bed is a great deal better than a car seat too small for my size. After the function was over, I went to the with her and we were a bit drunk. Luckily, we only had to cross the street to motel and not drive there. Anyway, in a party mood and getting on really well together. We got frisky you could say once alone together in the motel room, one thing led to another, and we became lovers. In the morning it was still raining we'd breakfast together then back to the room to fuck. After showering together, the rain had finally stopped we headed back home in our cars. There was still a trickle of water over the road, but not enough to stop us getting home. My home is on the outskirts of our town, she joined me there for more sex. Finally heading to her home about 5pm, regularly since then she visited me for sex, usually when her husband playing golf. I once thought playing golf, but never acted upon it, I think I made the best choice. Fucking a woman is better than chasing a ball around a golf course any day. You would have to mad if you had a beautiful woman at home and you played golf instead of fucking her.