Mother's Sex Toy

As the youngest of 3 and only one still living at home with my mother. Our father having departed for parts unknown 10 years earlier. My mother married at 16 and pregnant and had 3 children in 5 years of marriage and was 41 when I (21) became her sex toy, no precautions required as she had major trouble with my birth and can't have any more children as a result. Our father decided he wanted his life back (his words) left without saying anything only a note saying have a good life to us all. We weren't short of money as both parents come from well to do families, and all of our grandparents made sure we got anything required. After being deserted for 2 years my mother filed for divorce, being encouraged by my father's parents who live across the street from us. My father is a great disappointment to them both. The divorce took time as my father's whereabouts were unknown and after finally being found agreed to the divorce on the condition his where abouts not be let known to the families. With the divorce finalized, my mother felt free again herself and started dating. But soon got disappointed by the men she dated, some were just after her money and the others were more interested in their careers and being with my mother would help their careers due to the family connections. I'm the only one of her 3 children not to go to university and prefer working with my hands. I make furniture to order and do quite well, trained by my father's late uncle who also liked working with his hands. A large shed at the rear of our house is my workshop and that's why I was still living at home at first. I do date, but not great with getting laid by my dates. But do have some minor success, maybe because I can get laid at home is the reason. Anyway, my mother started sleeping with me, when we were away visiting my sister and her first baby 2 years ago. After we had visited, we were returning home and got delayed by heavy rain and some flooding. Staying for 2 days in a motel in the same room and lost power due to a lightning strike. No TV or anything else to keep us amused, we sort of started mucking about and ended up fucking. Of course we didn't stop at just the once, my mother is very willing sex partner of mine, and I also am very willing to fuck her. We mainly fuck while at home in my shed as it has a storeroom no windows and a lockable door. I made a wide bench which I padded, and we fuck on it. The live-in housekeeper doesn't do any cleaning in my shed and so our sexual relationship is out of sight of everyone. With all my grandparents living quite near, my mother's parents just a block away her being gone from the house isn't thought as strange. At night the housekeeper sleeps soundly and even an earthquake won't wake her, we know as we had a large earthquake, and she didn't know it had happened. My mother has a rule not to be disturbed while she is sleeping, and the housekeeper doesn't enter her room until she is up. I have made a secret connecting door between our bedrooms and so I can't be seen entering her room either. My mother like the sex with me and so do I and I'm always willing to fuck her.