Reading the stories on here brings back memories of some experiences I have had over the years. This one was many years ago when I first started going out with a girlfriend. I had only been dating her for a few weeks although Had known them for a while. I was staying over at my GF's no shared beds at that time were not allowed to sleep with each other. I was in my GF's room and she and her sister were in another large room which had two beds in it. I always sleep naked no matter where I am. As I awakened this particular morning the sun was shining through the partly opened blinds onto the bed I was sleeping in, and as often is the case I awoke with a nice semi hardon. My Gf had asked me the night before if I would get up earlyish to take her sister to the bus stop about 3 miles away from the house so she could the get the bus to work. So as I lay there with my semi hardon, I was aware of the door slowly opening, I pretended to be still asleep as I thought my GF was opening the door. My eyes were barely open so I could see. Much to my surprise was not my GF but her sister. Now she was 18 two years younger than her sister but equally slim and very attractive with long blond hair. I could see her looking at my cock which was by now taking a stiffer appearance. I still pretended to be asleep. She walked over to the dressing table looking in the mirror and brushing hair which was wet she had obviously just showered and was wearing a shortish housecoat. She then stretched up to a shelf above the mirror as she did so her housecoat rose up to reveal to me in the mirror a lovely partly shaped and shaved pussy. On seeing this I gasped she looked round and smiled. Then walked over to sit on the edge of the bed placing her hand on my now rock hard cock, gently stroking it. I said you should not be doing this she repled do you like it , I said yes, she said then I should be doing it. She then started to kiss me working her way from my lips to my by this time rampant cock. If you wish to know more let me know.