When my brother got married I remember my father describing Torry as all tits and arse. He wasn't wrong she had huge tits and an arse that looked like it was molded in two halves. I also thought she had a pretty face. For some reason Dad didn't like her much. I got married two years later and he seemed to like my wife. My wife and Torry would hang out together and we even went on a few holidays together. Just past our fifth wedding anniversary my wife and I decided to try for a baby. Talking with my brother he informed me that they had been trying for almost five years with no luck. About a month later they were at our house and when I went to the toilet I discovered Torry in there just about to pull her panties up. She had forgotten to lock the door. In the shock I stood watching her finish wiping her pussy and pull her panties into place. I couldn't help the hard on that was almost instant. I just knew I would end up fucking her. When she saw me she smiled and flushed then washed her hands and left me to have my pee. Two weeks later I was going over to my brothers to help him change the brakes on his car. I discovered Torry in a nighty and dressing gown and my brother was called into work and hadn't been able to get hold of me to say it was off for the day. Torry offered me a tea or coffee and I opted for tea. I watched as she stood on tip toe to reach the cups from the cupboard. I could just see the cheeks of her arse and a flash of pink panties. I could feel the swelling beginning. Then as she stretched again for the sugar I couldn't help myself. I slid my hand up her leg to her arse and stroked it. Torry said, "Oh you are a bad boy." I couldn't argue with that especially as I now had fingers in her panties rubbing her pussy. Torry groaned and squirmed on my fingers. She pushed my hand away and took took it to lead me to her bedroom where the bed was still messed up from them sleeping. It was mere seconds before I had her naked and laid on her back. I gave her pussy a good licking before I mounted her and slid smoothly into her pussy. She was a good fuck and bucked to meet my cock. When I was getting close knowing they were trying for a baby I went to pull out, but Torry pulled me straight back in wrapping her legs around me and saying, "I don't think I can get pregnant." I came deep in her having heard that. As we lay cooling down, she said that she had never used contraception and between the ages of seventeen and thirty one she had never conceived. We fucked again doggy style before I returned home telling my wife that I had a flat tyre and my brother had to go to work to account for the time I was out. After that I was in an affair with my sister in law. My wife told me on a Sunday morning that she was pregnant. We were over the moon. Later we informed our parents and my brother and Torry. I could see the hurt look on Torry's face. Then just four weeks later Torry was telling us that she too was pregnant. Our son was born two weeks early and Torry gave birth to a baby girl just three days later. Now my wife and Torry were almost inseparable taking the babies everywhere together. After the required delay in sexual activities that women have, my affair with Torry resumed. I was a bit more careful knowing that she could get pregnant and that there was a 50/50% chance that her daughter was mine and not my brothers. It was about eighteen months after our son was born my wife announced that she was pregnant again. I remember the look on Torry's face. She was broody again after knowing the she was to be an aunt again. A week later I was fucking Torry again and she was on top and I was close to coming. I warned Torry and said it was best she stopped now. Instead she pushed down hard and milked my cock with her pelvic and pussy muscles. You guessed it, six weeks later she announced she was pregnant again. Nine months later they both had one of each sex now. As soon as she was able Torry wanted sex again. I was especially careful knowing I might be responsible for both of her babies. As careful as I was she still got pregnant again as did my wife. My wife and I now had two boys and a girl and My brother and Torry had two girls and a boy. I went and had the chop. Once it was all settled down the affair resumed again. Torry wasn't aware that I was unable to produce any more children and insisted that we ride bareback at all times. I was happy to, now knowing that I couldn't get her pregnant. The affair fizzled out after six or seven years and I was now happy and contented to stay faithful to my wife. Then we were shocked that Torry was pregnant again. My brother seemed even more shocked and stunned than we were as he had assumed that he had run out of bullets. I managed to talk to Torry on her own and asked about the latest baby and she told me not one of them was my brothers. I their early days of courting she had taken a condom he used and had the sample tested to find out his sperm were abnormal and basically broken. I asked what would happen if he ever found out and she was quick saying that he never would. She had another boy. In some ways I was glad it wasn't mine, but in others disappointed that she had cheated on my brother not only with me, but also someone else. I became god father to all their children and watched them all grown up. Now at 67 I see them all from time to time and at family events with their children and even great grandchildren. I am so pleased that my brother never found out and loves each and everyone of his children.