Isolating

I'm Scott 22 caught away from home and having to isolate. The university I was attending closed and I was unable to get back home. So I headed to my grandma's home to stay with her, thinking it be 2 or 3 weeks and it would be finished. Grandma Alison 61 widow was happy to see me, nothing happened for 5 weeks, and no end in sight for the pandemic. I got bored and horny and started watching porn on my laptop. Alison passed her time gardening, then one day I was masturbating watching porn and Alison walked in catching masturbating. I was shocked, but she just smiled and asked me to give her a hand moving a large plant pot. I put away my laptop and cock and went with her, while shifting the plant pot she asked did I masturbate a lot. I replied no but being restricted, I had got bored and was doing it to pass the time. She smiled and requested me to help with another job. Cleaning out the old shed beside the garage, it was full of old tools and plant pots large and small. She had me stack the stuff into 2 piles "keep and trash". After that was done we headed inside for a cold drink. While sitting having our drinks, she said she was going to shower and asked me to join her and wash her back. I was unsure of how to respond, then she added you can fuck me after as I still get horny myself. Thinking I might as well take her up on her offer, I agreed. We showered together and then went to her bed and I fucked her and stayed in bed with her for the rest of the afternoon. Sex with her became so regular, that I slept with her every night after that. Even after the lockdown finished, I now stay with Alison instead of staying at the university.