My Grandmother update

I'm Glen and I started having sex with my grandmother Ruby when he shared my room over the garage after her home was damaged in a storm,. After she returned home I would visit her regularly and have sex with her. Last month I was visiting Ruby and having sex with her, when my Cheryl caught us and she was upset. But Ruby talked to her for a while and she settled down, She accepted that Ruby was still able to have sex and it was hard for her to accept that her grandson should be fucking his grandmother. But Ruby had said So it would be better for me to go to bars and pickup strangers for sex and not help my grandson learn how to best treat a woman. Cheryl decided not to tell anyone else and keep our secret. Just over a week later dad was away playing golf as he did regularly and Ruby was visiting other family members out of town. My younger sister was away on a sports trip with her school. I was home alone with my mom Cheryl, she was decided to talk to me about my sexual relationship with Ruby. After telling me she wasn't judging me and that she knew that we were both consenting adults. She said It was incest and that I should find a girl my own age. I said I've tried and hadn't had much success, but having sex with Ruby had increased my confidence and I was asking more girls out now than before. I could see down her top and seeing the top of her breasts I got a hard on and seeing this. She said I should control myself better. I told her That I thought she best woman I know for looks and everything else I liked about women. She said So you think I'm sexy at my age do you. Very I replied and than I kissed her on her lips. Expecting to be told off. But she kissed me back and so I pushed my luck and started to feel her breasts and not getting rejected. I went further and soon had her top and bra undone and one hand under her skirt. We spent the night together and she now joins me and Ruby for sex. Dad doesn't seem all that interested in it these days. But I'm totally interested in it.