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How I became a voyeur

I am quite the voyeur (all legal stuff) and have been for many years. I love watching people having sex as well as listening discreetly in my hotel room. However, the real story is about how it all began. I was 16 years old at the time. My mother had re-married when I was 12 and I had a step sister a year older than myself. After a rough adjustment period we became really great friends. In fact, we were probably better friends and closer than many natural siblings. As we stumbled through puberty together we would talk constantly, share all the details of our changes and our developing sex lives. She would joke about me jerking off all the time and I knew that she had begun masturbating. I would always have to run to the bathroom after one of our talks and take care of my exploding cock. She would laugh and encourage me. There was one thing about her personality and our relationship....she worked at being the dominant one. She knew that she could get anything she wanted from me. I would do errands for her and cover for for her when she needed it. As we got older, this became more frequent. Things really got interesting one night...our parents were going to a party and we knew they would be out until after midnight. Cindy had a date and I was going to stay at a friend's house. Unfortunately my friend got really sick during the evening and I decided to head on home. I got home around 10 and headed to my room which was down a hallway from the lower level family room. I went to bed and was dozing when I heard Cindy and her date come into the family room. She didn't know I was home so I kept really quiet and with the dark hallway, there was no way they could see me. They turned the Television on and it provided just enough light so I could see everything as they started to make out. Now, I thought it was strange that they were in the family room rather than go up to her bedroom ...then it occurred to me that from where they were, they could see if our parents came home early, There was a door so her boyfriend could get out real easily. Something told me I was going to be in for a show I just didn't think it was going to be as great as it was. I had the perfect vantage point! I watched as they made out heavily and he began unbuttoning her shirt and was running his hands all over her tits. Then of course he unsnapped her bra and it fell free. Now, I had seen Cindy's tits as we passed after showering, but never like this!! Her really cute 34 B's stood right out and were led by her stiff nipples. She was getting right into it and I could hear her breathing heavily. Next thing I saw was the zipper on her pants going down and bf's hands going in on her pussy. Cindy was moving her ass on the couch and I could tell that he was in her panties and fingering her. This was getting better and better!! I heard as Cindy arched her back and let out a little scream as she came from the finger fucking she was getting. She kept right on and was gearing up for more. Off came her pants and panties as she moaned and came a second time. By now his pants were open and she pulled his cock out, bent down and took it in her mouth I knew this wasn't going to last long and he almost immediately said "stop or I'll cum right away". She sat up as he swung her down onto the floor and got on top all in one slick move. He was thrusting inside of her soaked pussy as she continued moaning. I saw him tense up and let out a yell as he filled her pussy. It didn't last very long but I knew he'd be working on a 2nd round as he never even pulled out of her. He must have gotten hard really quickly as he started thrusting again. I could hear the sloppiness of her pussy as he bottomed out in her. I heard her say "I want to get on top". In no time she was riding his cock with reckless abandon as she approached another orgasm. This time it wasn't just a moan or a yelp, it was a full fledged scream as she started on a series of orgasms. About halfway through it I saw as he tensed up again and shot his 2nd load into her pussy. They both collapsed and were panting as they lay there in front of the TV...it was an amazing sight to see and I think it fulfilled a fantasy of wanting to see my step sister getting fucked. They lay there for about 15 minutes and started to get up when Cindy grabbed his cock and put it in her mouth. A few minutes of good head and he was hard and ready to go again. This time he turned Cindy around and pulled her up to her hands and knees. He buried in her pussy from behind and was thrusting hard as she moaned, whimpered told her to fuck her some more. With two loads of cum already in her, she was a sloppy mess and I could hear every thrust. It only took a few minutes and he grunted as he unloaded another load in her soaking wet pussy. They were both spent...they lay there for a while and then he got dressed and left. Cindy headed for her room. The next morning I went upstairs to the kitchen and there was Cindy at the breakfast table with our parents. She had a surprised look on her face. My dad asked what happened last night and I told him that Billie got sick and I came home. They did't know what time but assumed it was in the middle of the night. My step mom asked what time it was and I said "oh, just a little before 10". I looked over at Cindy and she looked like she was going to pass out. It suddenly hit her that I was home and probably saw everything. She excused herself and headed for her room. We cleaned up the breakfast dishes and my dad and step mom left for a golf outing and would be gone all day. It was about a half hour later when Cindy came to my bedroom and sheepishly said "can I come in?" "of course you can....anytime". She had lost that controlling demeanor and I suddenly felt bad for her. I'm not sure what was running through her mind but she was being unusually submissive. She was trying to talk but I think she was getting a little choked up not quite knowing what to do. Finally she got it out ...."how much did you see?". "Everything" I told her. "Why didn't you let us know you were home?" "Why would I? and miss the greatest show I've ever seen?" I saw the look come over her as she was now a little pissed at herself for being vulnerable and letting me have control. "you're an asshole" she said as she stormed out of my room. "You'll get yours" she said. Fifteen minutes she was back at my door and her look had totally changed. She pulled out my desk chair and said "sit here you pervert". I didn't know what she was going to do but I was amused. All of a sudden she grabbed by wrist and pulled my hand behind the chair. She grabbed the other one and in no time my hands were tied behind me and I wasn't going to be able to get them untied. She had regained that dominant attitude and I quickly figured out that I was going to "get mine". I just didn't know quite what that was yet. Cindy came around in front of me. I was dressed only in a t-shirt and boxers. She had on a camisole top and satin gym shorts. As she walked ominously in front of me my mind was racing as to what was going to happen next. "Well, little bro, let's find out what you saw...maybe you get to relive it a little. "did you watch as we were making out"? "yes". "Did you watch him undo my shirt and feel me up"? "yes" " Did you watch as he undid my pants and fingered my pussy?" "um...yeah". "Did you like hearing me cum"? "yessss". By this time my cock was hard and was poking out of my boxes for Cindy to see. It was throbbing and I knew she could see the slippery pre-cum. And then she said "hmmm, someone getting turned on? looks like you're wanting to cum bro". Then she continued...."did you like seeing me take his cock in my mouth?" mmm..yes. "Did you like him getting on top and burying his cock in me? Did you like knowing he was shooting his cum in my pussy?" by this time I was squirming and realized she was making sure I "got mine". She proceeded to ask me more questions as to what I saw..."and then I got on him and rode his cock until I had a huge orgasm and he filled me again?" I was in agony as I couldn't grab my cock and I could only endure the torture she was giving me. "I bet you thought we were done after that...until I sucked him hard again and he fucked my doggie style and filled my pussy for the third time". She knew she had me and put her face down close to my cock as I suddenly started to erupt and was blowing cum into the air. Cindy had exacted her revenge as sat there with cum all over the place. I thought she was done with me when to my surprise she asked if I had another one in me. "of course you do" she laughed. She got down on her knees in front of me and took my hardening cock in her mouth and gave me the most fantastic blowjob imaginable. I finished by shooting a load of cum in her mouth and she swallowing every drop. That was the beginning of our new, secret relationship.

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