When we had our first son some twelve years ago, my wife was overwhelmed and we had to hire a nanny to help with the child. The nanny was two years older than my wife and had all the nice curves all over. her booty was irrestible and to top it all she had the most winning smile ever, and I think she knew it because she always smiled showing those milk white teeth of hers. I loved it, Ioved it so much!

My wife and I were still young in our 20s so we were always fighting a lot , and just about anything. And our nanny lived with us, so was my nephew. One day I was watching our nanny at the sink and whispered to my nephew how beautiful she was and how I would just need one night with her, so we started laughing. She came into the sitting room and asked what was so funny, and my nephew said your boss is lusting after you, just like that! She smiled and went on with her chores. I later caught up with her and whispered to her that she was the most beautiful thing I had ever seen in my life. She smiled and asked what I was going to do about it. And there was nothing to do, because my wife and nephew and other relatives were staying with us.

One day though, I had another fight with my wife and she stormed to the bedroom, I remained in the sitting room with my nephew and our nanny. After a few hours of idle chit chats, I stood up and went to sit on the sofa next to our nanny and I was complimenting her again. She said talk is cheap, and asked my nephew to leave the sitting room. My nephew said it was a bad idea, because if anything was to happen he would need to look out for my wife. So we thought it was a good idea, and I started to kiss her. She kissed me back and our lips were locked. I started playing with her firm knockers and my nephew was grinning on the other sofa. The kissing just became more intense, one because being watched was a big turn on and two because of the prospect of being caught by my wife in the act.

I then pulled her to sit on my lap. she was wearing a short skirt and a g string. My hands were feeling up her skirt and she was so wet. There was a big towel and she partly covered us as I pulled out my dick. In no time she had sat on my poker and grinding on it. It was just unbelievable, and she was cummin on my shaft. The whole thing lasted about seven to ten minutes, but was by far the hottest sex I have ever had.
Finally I could not hold on any longer and recklessly deposited the hot cum into her. She smiled in satisfaction and rushed to the bathroom dripping of cum down her legs. It was a priceless sight. I always remember that night vividly and my wife never found out. We never did it again.