Still think about punishment from mother in law

About 15 years ago, after my divorce, I stayed in touch with my mother in law. We’d always gotten along well, and she was only 12 years older than I. One weekend, she invited me over and we had a few drinks. She asked about my sex life since the divorce, and that led to some kinky talk. I finally admitted I’d always fantasized about having her spank and paddle my bottom. I could tell she was surprised, but after a bit more talking, she had me go down to her basement, take off my clothes and bend over a couch. She came in with a ping pong paddle and a belt, and told me I was about to get my wish. She started with the belt and it hurt immediately. She was (and is) a strong woman! Soon I was squirming and wondering if this was what I really wanted. She must have been thinking the same thing, because she said “probably not as sexy as you imagined, is it son?” She picked up the paddle and gave me around 25 more swats. I had tears in my eyes and wanted to beg her to stop, but just couldn’t do it. She finally quit when I began sobbing quietly. She put me in a corner and went upstairs. A few minutes later she returned with a bottle of olive oil. She said “I’m gonna rub some on your butt while you masturbate for me.” My little cock was hard and I was so turned on, especially when she began rubbing the oil on my battered and welted ass. She told me to tell her when I was about to cum, and within a minute, I told her. She stopped rubbing and moved in front of me to watch. I shot a big load into the air, some of it landing on her bare feet. She seems to get a kick out of watching me lose control, and observed my legs were shaking. After a bit, she told me to get a towel from the bathroom and clean off her feet and the floor. I did as she ordered, still butt naked. After, she sat me down on the sofa beside her and asked if that was what I needed. I told her yes ma’am and wondered if it could be a regular thing between us. She laughed and said “no, this isn’t my thing. You’ll have to find a woman who’s into this kind of stuff.” She moved away and I don’t see her anymore, but I still think of that evening occasionally and masturbate. I never did find a woman who enjoys a dominant role, and I wonder if she still remembers and perhaps pleasures herself. Anyway, thanks for reading. And I know it may sound somewhat made-up, but it’s all 100% true.