so let me start off by saying we were BOTH under the age of 18 when this started. so I was not breaking any laws, and not being a child molester. my younger sister was adopted and abused when she was 2 in the worst ways. she never really grew out of being sexually curious. and until I met her I was never into younger girls. I don't remember how it all started. but the first thing I can remember was wanting her to see me naked. I had seen her naked in the tub many times. I used to bring her toys so I could open the door and look in. my room was across the hall so I could then go into my bedroom and watch her through the crack. on a number of times she would look out and see me. at least I think she could see me, because one day when my friend was over and watching her bathe, with me. she scooted towards the open door, looked at the opening and shouted "gotcha" we both almost had a heart attack in fear we would be in trouble. but nothing came of it. my mom yelled up the stairs for her to finish up and she did. I would then go outside and watch her get dressed through her bedroom window. I would open her shades just enough to peek through them and be able to see her. this progressed to me putting on tighty whities when my mom would leave, and walk around in front of her with my raging hard-on pressing firmly against the fly of the tighty whities. I made sure she noticed. and when she did she couldn't take her eyes off of it. I would love the feeling of her looking at my huge firm bulge. and this then progressed to me waiting till I knew she would be crossing the hall. and I would come out of the shower naked. I always ran and pretended that it was an accident. my favorite thing was to leave my bedroom door ajar and masturbate loudly with lube and moan so she could hear me. I could hear her try to sneak up to my door and watch me. the feeling of knowing she was there watching me was AMAZING! she would stay there and watch me until I was done. sometimes she would start to open the door. and I'd get scared and yell don't come in. even though I really wanted her to. but I did not want to get in trouble. god I wanted her to come in. but I was too afraid! many times she even asked what I was doing and what all the noise was.. man did I miss out!!! later it progressed. I would sit around in my bath robe and she would sit on my lap and ask me to give her wedgies. I would slowly pull my robe open so my cock would pop up between her legs. sometimes she would get up and say it was out. others she would sit there and look at it. after a while she eventually started touching it. not stroking it. but just poking it. I would get so horny I couldnt help but stroke it and rub my knuckles against her pussy. she would tell me to stop in a giggling way. "that it made her feel funny" one day we were on my bed and she asked me to teach her to masturbate. I told her how but she asked me to show her. I told her no. but she insisted. I rubbed her through her panties and said thats how. as I was doing this, my moms boyfriend crossed the hall and asked what we were doing. I think he saw us. things kinda stopped after that scare. but now I am 30 and she is 22 we talk about all the things we did together. and we both agree how much we wanted each other. and how much fun it would have been to do more. I still ask her if we can fool around. but she says no. she makes half jokes sometimes saying maybe when we are both really drunk some day.... so maybe someday I will get to make love to her.