When I was 15 my sister caught me playing with myself. She said she was going to tell our parents. I was scared to death she would but I never got into trouble so I assumed she didn't tell. About a month later I was getting out of the shower when she knocked on the door. I asked her what she wanted and all she said was to let her in. I covered up with a towel and opened the door. I thought she had to pee so I was about to step into my bedroom while she peed but she stopped me before I got out of the bathroom. She said she had started to tell on me but the more she thought about it the more she realized how much she liked what she had seen. Mom and Dad were still at work so no one was around at the time. She asked me if I would do it while she watched. I didn't know what to say, so I mumbled something about being to shy and had never done anyhting like that. She asked again and said no one would ever know except the two of us. I still said I didn't know so much about it but if she would take her shirt off I would try. I knew if she took her shirt off then she definately wouldn't tell anyone. She thought about it for a second and then she took her shirt and bra off. I was hard instantly. She had these small tits with huge puffy nipples. She is a year younger than me and I am sure I was the first guy to see her tiny perfect little tits. I couldn't hide my boner anymore so I dropped my towel to the floor. She stood there and stared at my dick. I couldn't look away from her tits and she didn't take her eyes off my dick. She said touch it for me so I grabbed it and shook it all around while she watched. She stepped closer and I sat down on the side of the tub and started stroking my dick. Her eyes moved up and down with my hand. I was stroking away while looking at her tits when I decided to ask her to take her shorts off. She hesitated but when I said I would stop she gave in. She eased her horts and panties down and I almost came right then. Her pussy was the prettiest thing I had ever seen. I had seen others in magazines but hers was the first I had seen in person. I was floored. I started stroking faster and squeezing my dick as hard as I could. I told her I was going to come pretty soon if I didn't stop. She said to hold off a second while she got down on her knees as colse as she could get. I reached out and for the first time in my life I touched a girls tits. She didn't back away or stop me so I let go of my dick and took a tit on both hands. I couldn't get enough of her tits and nipples. She just kneeled there staring at my dick while I played with her tits. I slid my hand down to her pussy and felt it. I remember it being so smooth and just a little bit of wetness. I didn't know then what thay was. I thought she had peed a little. I went back to her tits and asked her if she wanted to touch my dick. She never said a word. She reqched out and touched the tip of it and then she slid her hand down it's full length. After a few minutes of me feeling her up and her rubbing my dick I knew I had to cum. I asked her of she wanted to finish me or if I should so it. She wanted me to while she watched. I had her lay down by my feet and then went back to stroking my dick for her. When I couldn't hold off anymore I came and drops of my cum landed on her chest, neck and face. She just lay there with her eyes wide open while I slowed my stroke down until I stopped. She never took her eyes off my dick until I was completely soft and started to get up. She told me how much she had liked watching me and wanted to do it again if I would let her. We never had sex but she did give me hand jobs alot after that and I even got her to suck me a few times. We haven't fooled around since she was 18 but I would if the chance comes up.