Got Caught

I'll call myself Luke and last year I (then 19) was home alone and started masturbating. My grandmother I'll call Rose, came to drop off new catalogs for my mother. Rose has her own key and knowing my parents would be out just entered. Catching me masturbating, after a few awkward moments she said she would talk to me later and left. Rose is a very conservative woman and regular church goer. I hoped she wouldn't tell my father; he's an arch conservative with very strong views. Anyway, the following Sunday after church we were all having lunch together as was usual. Rose suddenly said I'd offered to help her with moving boxes that afternoon. I hadn't but couldn't say I hadn't, so I drove Rose home instead of my father. Rose told me on the way she wanted to talk to me about me about my masturbating without my father getting involved. I got the usual talk about should find a girlfriend and I shouldn't play with myself. But then she stunned me saying she would get me off till I found a girlfriend. She put a large beach towel on her bed and told me to undress and lay on the towel naked. Seeing my confusion, she added she'll also get undressed and she did. It didn't help much with my confusion, but I did as I was told. She started stroking my cock which went hard, and she sucked me to moisten my cock, and she got me off. Then laid beside me telling she would help me get off as time and occasion permitted. We told a bit about my lack of a girlfriend and being next to her naked I got aroused again and hard again. This time she told me I could fuck her, she might as well get some pleasure as well she said. So, I did and after I returned home still couldn't believe what had happened. True to her word, Rose let me fuck whenever we were alone. I realized Rose liked sex and being a widow since 2022 she wasn't getting any satisfaction herself. Her social standing in the community meant she couldn't just see anybody or talk would start. Any suitable men her age were either married or gay, being seen with her grandson wouldn't cause talk. A win/win for us both, she regularly visited the grave of her late husband on what she called special days but only when they fell on weekends. Usually, my father would take her on the weekend, and my father liked playing poker and every few months would have a big game as he called it. Knowing that Rose chose his up-and-coming poker weekend as a special visit day. Knowing my father would be put out by missing his poker game. She mentioned the weekend and seeing the shocked expression on my father's face, added both Saturday and the Sunday were both special. Just as my father was ready to give up his poker game, she said I'd offered take her instead. The relief on my father's face was instant. She had chosen that weekend to get me alone for sexual fun as she called it. Knowing her son wouldn't willing give up taking his mother to the grave site of his father without a good reason. We left late Friday afternoon would return Sunday afternoon; my father was okay with us going without him. I asked Rose what was special about the dates, I'm horny she replied and want a good fucking. No chance of being caught out of town, we booked into the usual motel close to the cemetery, 2 beds but we only actually used one. We of course visited the grave twice and then back to our room for sex. Since then, we've gone away again easier now since my father has relaxed more about his mother's trips.