I am five foot with long blonde hair and blue tips. Thin with 36C breasts. Katie is also five feet but she has long dark brown hair and 34B breasts and beautiful blue eyes.
My step sister and I are three month apart. We have never been close and we run in separate circles at school. But this is when we became best friends and secret lovers.
It was a Saturday morning last month and our parents had left to go shopping. I could hear her showering so I decided to have a little self play. I was really getting into it and I didn't hear her get out. The next second she was knocking on my door and before I could cover up she came in.
There was no way to hide my hand rubbing my clit and my box of toys next to me. I had always assumed she was straight but she proved me wrong. At this point my sister approached me and pushed my hand away only to replace it with hers. My pussy only got wetter. I have always liked to be called names and she knew that. So Katie tells me 'ride my hand you little cunt slut' by this point I was moaning like crazy! A few seconds later I orgasmed like never before and squirted all over her hand.
Later the next day when we had time alone I replayed her kindly. But that for another time. For now I hope you enjoyed my first story!