I married my wife 3 years ago. She has a daughter 13 years old, and they moved in with me after the wedding. One day about 5 months after the wedding, I was in the pool with my wife Linda, and her daughter, Kristen. The phone rang, and Linda answered it. She came back, said that was work, and she would have to go in for a few hours. Her last words were, watch Kristen, she doesn't know how to swim yet. Half hour later, Kristen asked if I could teach her to float or swim. I said ok, lets float first. I put her on her back, my hand under her upper back, the other one under her bottom. After telling her what to do, I let go, and she started to sink. This time she wraped her leggs around my back, laied out on her back, trying to float. As we were in the shollow end, I could see her pussy through that tiny white bottoms of her suit. I got hard instantly, and she was having so much fun with her "floating", she didn't feel my dick pushing into her suit. I reached down, and pushed my suit down to my knees, and pushed hers to the side, and my dick was now bare aginst her bare pussy. She was moving her arms around, trying to stay afloat, and then I started pushing myself into her. That is when Kristen felt me, and lifted her head up, looked at my hard dick, and tightened her legs grip even tighter, pulling me deeper into her. As I started to enter her tight little pussy, she moaned, and said, I've wanted this for so long. I reached down behing her back, pulled her up to me, and carried her into the house. Still half way inside her, we went to her room, and I laied her onto her bed, and started slowly moving back and forth in and out of her, til I came to her hyman. I said, baby, this is going to hurt a little, but then it will feel good after. She replied, yea, I know, I read about this in my health book at school. With that she put those sweet leggs back around my butt, and as I pushed into her, she pulled me into her also. I took her cherry, and fucked her for the next 45 minutes. Later that summer, I did teach her to swim, float, and yes fuck like a grown woman. She hates her dad, and says I am her father, daddy, and step dad all rolled into one. She just turned 15, and we still fuck when her mom is out to work. I did get her mom to put her on BC, for regulating her pirods, but really so we can fuck and not worry.