Mother in law

I’ve been having sex with my mother in law for the passed couple of years
it started when she moved in with us she was in her 80s and not very well at the time
one day she was sitting on her bed wearing her nightie and called me in and asked if I could rub cream into her feet
i got down on the floor and put cream on her feet and rubbed it in I looked up at her and she was laying back on the bed with her legs open enough for me to see she had no underwear on
i finished her feet and left but kept thinking about her all day
about a week later the wife was shopping and her Mother came inn to the living room and sat on the same sofa and asked if I would put cream on her feet and legs
I agreed so she lifted her legs up and her feet facing me I said she would have to go and remove her tights she smiled and said I’ll just do it here will you help me I was getting hard
I removed her slippers and her feet felt warm and sexy
she lifted her bottom from the sofa and eased her tights down of her bottom then lay back with most of her legs showing and her tights on her thighs she said we’ll help me so I took hold of her tights and eased them down and removed them and put them on the floor
then she put her feet over my lap so I could put cream on them she must have been able to feel my cock
i started to rub cream on her feet this made her feet twitch and that me even harder then I started to cream her shins and knees
she let her legs open just enough for me to see her gussets black and silky
she thanked me for doing her feet and legs and sat up and put her feet back on the floor and smiled at me and said it looks like you enjoyed as much as me she stood up and asked me to pass her tights she again thanked me and said she was going for a lie down
she went up stairs and I went to the down stairs toilet to sort my self out I took a quick peek in the washing basket and got a pair of her knickers out and wanked as I. sniffed them
a couple of days later she left to stay with the wife’s sister and things returned to normal in our house
about 2 months later the mother in law had an argument with het daughter and returned to us to stay
we were home alone and I took her a cup of tea and was at the side of her chair placing the tea on her coffee table I stood up and she run the back of her hand up my thigh and onto my crutch looking up she smiled and said she had missed having her feet and legs rubbed with cream and could I do it now
I agreed and got the cream and asked her to lay back on the sofa and sat beside her as she swung her legs up onto my legs
this time she pulled up her skirt for me to remove her tights she was not wearing knickers and I could see everything I put my hands in the top of her tights and eased them down the back of my hands gently touching her Fanny
I got her tights of and the skirt stayed pulled up as I rubbed the cream on her feet and legs then I rested one hand on her Fanny as I rubbed in the cream her legs opened more and I could see her clit I bent forward and kissed it running my tounge over her clit.
after 5 or 10 min she came shaking and squeezing her legs together she said that she had never had a man go down on her since she was in her twenties and it felt great she then asked if she could do the same to me she sat up leaned into me and undid my flies and stroked me she said I was bigger than her husband was then looking at me asked if she could lick it
I nodded and she was down licking and sucking me I told her I was cumming and she carried on till I came in her mouth