My Grandmother

I'm George 19 and I was raised by my Grandmother Beryl 59. My mother Joanne had me when she was 15 and after got into drugs and died at 17 from a overdose of bad drugs. I don't know who my father was and my Grandfather died 7 years ago of a heartattack. We live in a small town right on the outskirts on a 10 acre block have 3 dairy cows and chickens. I'm a shy by nature and have always kept to myself and don't have many close friends. About 7 months back Gran caught me masturbating in the Shed/Garage out back of the house. She didn't say much, later that day she asked If I had any female friends. No I replied, I didn't go out much except to the movies. My Gran then said I need to meet girls and I said I'm too shy to talk to them. She said There's no need to be afraid of meeting women and I would be a lot better off when I do. So she said she would teach me about women and over the next week she did. But I was still too shy to approach women even with Gran nearby, urging me to approach them. So she then said I need much more teaching then she first thought. That night she got me to bath with her, showing me the parts of her body and getting me to touch her everywhere. I was hesitate, but done as I was told and after getting out of the bath I had a very stiff cock. Gran said I will you take care of that and grabbing my cock lead me to her bedroom and getting me to lay on my back on her bed she started to stroke it and after a while she went down on me and sucked me off and I blew in her mouth. I had told her I was going to cum, but she still swallow it all. Saying it was my first blowjob and it was right to swallow it. She was still being naked she laid beside me and told me it was my turn to go down on her and I did as I was told following her instructions. After that we slept together that night both naked. In the morning I awoke with a hard cock and Gran mounted me and we fucked, after that I felt a bit more confidence. Over the next few weeks I fucked Gran regularly, anytime I was horny. With Gran's urging I got the courage to approach a woman Gwen 18 I knew and ask her out. She accepted and we when a few times and finally had sex at her place. I returned home the following morning and Gran asked how it went. I replied Great, but not as good as you. She then asked what was wrong with the sex, I replied she didn't move like you do. She just laid there and let me fuck her, did you go down on her she asked. Yes for a little while I answered. You'll will need to do more to her before you fuck her again. Get her off before you fuck her and you'll find she will be better. With that she said Show me what you did and I will show you where you went wrong. So I had sex with Gran and the next time I took Gwen and had sex with her I got her off before fucking her and Gran was right the sex was a lot better. But I still asked Gran for a fuck after I got home and she agreed. We still have sex and Gwen and I are going steady and having great sex. We all when camping last month and I went off fishing, leaving Gran and Gwen at the camp. I caught a few fish and returned and found them both in the tent having sex with each other. I was a bit shocked at first, but soon as they realised I was back. They asked me to join them and I did, Gwen is bisexual and it was her who seduced Gran. I couldn't be happier.