Last month one of my cousins came to stay as her parents are getting divorced. Libby is a sweet 13 year old, at first I was very moody but since last month my wanking sessions have become awesome thanks to her. Last Saturday evening we ended up going swimming and the pool was quite empty. When I saw Libby in her swim suit I had a hard on that made it difficult to swim. Her small tits and poky nipples, her cute ass and I could make out her mound beneath her suit, one time she was sat on the edge and I could even see the outline of her little slit. I had to stay in the pool and couldn't join in jumping in as I was soooo stiff. After a bit we began to mess about and when I grabbed her she felt so nice and I didn't care my hard cock was pressing into her, I think she felt it anyway, once I almost came as we were squeezed together and the rubbing of my cock against her thighs almost made me spurt. As we messed about I used it as an excuse to grab her, feeling up her bum and I even got my hand between her legs a few times to touch her puss.
One afternoon after school Libby was lying on the front room floor watching TV and as I looked in I could see up the back of her skirt to her panties which made me stiff and I went to the loo for a wank, another time I saw her lying on the sofa after school and she was lying on her hands and riding them, I watched as she squeezed her bum it made me very horny. When she wears a skirt she is always flashing her panties and now I jerk off with them.