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This story and all the characters in it are completely fictional. If the idea of sexual intimacy between a brother and sister bothers you, I would ask that you read no further. That said, this was extremely fun to write, and I hope you enjoy reading it.
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A Dangerous New Level
Hi, my name is Aaron and I've had incest fantasies since college. The idea of a brother and sister being so close and sharing something so intimate and so forbidden really turned me on. I'd never really considered acting on it with my own sister though. The idea was almost appalling. I didn't love my sister in that way, I thought, though I'd always felt very protective of her. Aside from which, I knew she couldn't feel that way about me and there would be serious ramifications for even mentioning the possibility of it to her. This is real life after all, and there are some things that just aren't accepted. Once you say something like that, you can't take it back and it will stay with you forever. Still, I couldn't help but imagine the forbidden sometimes. I had vague ideas in my head of how it could happen and how it might, but I didn't like to actually think about her naked. Somehow that made it too real and way too scary for me.
To appease my fantastic urges, during college I downloaded a lot of incest movies and stories from the Internet. I kept my fantasies secret and well hidden throughout college. I was a virgin until my junior year because quite frankly I was terribly shy and introverted, and not very comfortable around people. I had a darker and far more open side though that I'd kept hidden from the world. To the outside world I appeared a quiet timid loner, most of the time. I was short and young looking, with dark hair and eyes. I wasn't extremely well-muscled, but I did work out and was in good shape. Most women told me I was cute, but when they said it they sounded more like they were talking about a puppy than a man.
In my Junior year though, I made a bold move and decided unleash my darker personality on the world, though I still kept it secret from the public. I was a very imaginative writer, and decided to start putting my fantastic visions down on paper. Then I started to advertise them in online personals. I knew how to sell myself on paper, I played the part of the innocent looking devil whispering into the ears of my readers and tempting them to experience the immense pleasure they might attain from experiencing my fantasies. A couple of women were enticed by these fantasies, and I wound up having a lot of fun in my second half of college. I found one kindred spirit in particular with whom I experienced my most erotic of fantasies. She was a short beautiful Venezuelan woman of about thirty with dark eyes, long dark hair, a dancer's figure and a fiery spirit. Her breasts were actually a little bigger than those of my ideal woman, but I certainly wasn't one to complain about such things. She and I fulfilled each other's deepest and darkest desires, from public sex to student-teacher fantasies to bi-fantasies to light S&M you name it and we tried it. I was sad to be parted from her when I graduated and moved back home to attain my law degree from a local university, but we hadn't been in love or anything. It had only been lust, and as sad as I was to lose my partner in crime I wasn't overwhelmed by it. Still there was one fantasy of mine that she hadn't been able to fulfill completely, though we had roll played it. She couldn't truly fulfill it because she wasn't my sister.
When I returned home from college my sister Catherine had completed her Freshman year of college at the city's university, which was about a half an hour away from our home by car. She was beautiful with dark brown hair that fell to the tops of her shoulders, blue eyes that seemed to burn with intensity no matter what they looked at, a slim figure, and soft smooth white skin. She was of a height with me, which put her at about 5'5" and she had breasts the size of grapefruits. I had never seen her fully naked, at least not since we were kids and we played you show me yours and I'll show you mine, but I had seen her in only a bra and panties a few rare times. One thing I noticed when I got home was that she took to walking around the house in just that a lot more than she used to. She didn't seem to mind if I noticed. It embarrassed me, but I supposed I deserved this sort of torture since during my high school days I had often walked around the house in nothing but my boxers and perhaps a t-shirt at night. I am ashamed to say that she did walk in on me a number of times when I was masturbating back then; my door had no lock on it. However, I had always been quick to cover up as the door was opening, so I never knew whether she fully caught me or not. Though I can think back on one time when I was completely naked that I'm sure she caught me on, as I didn't have much to cover up with. These incidents were never mentioned.
I had never caught her doing anything similar though. I don't think she really discovered the joys of sex until college. She was a big prude in high school. She wasn't giving up anything if she didn't want to; she acted like she didn't need any type of sexual pleasure. She simply wanted a trophy boyfriend, who fit all of her qualifications to display to all the world. She was always very strong willed, and sure of herself. Despite her looks I never really had to worry about her, as she was more than capable of taking care of herself. However, just because I didn't have to worry about her doesn't mean I didn't. I was irrationally jealous of her boyfriends though I didn't like to admit it to myself at the time. It hurt that they were usually so much different from the type of guy I was. Thinking about the way this made me feel had often made me want retch. It was a reminder to me that I might want something despicably sick. I didn't want to face that.
When I came home from college though, I couldn't help but think about it more and more, especially when she walked around in nothing but her bra and panties. Her breasts had grown a bit from high-school; she'd been pretty near flat-chested then. Suddenly picturing her naked became easier and the idea became more real to me. I brushed these thoughts aside whenever I talked to her. I was very good at hiding my feelings. Even my jealousy of her boyfriends came off as a genuine brotherly concern for her. As she started dating guys who were more like me, the jealousy did ease a little bit, but it was still there (just well hidden). She would often come to me for advice whenever she had any kind of problem, and that included problems she had with her boyfriends. I have a very analytical mind and am very honest with my opinions, though I lose all perspective when dealing with my own problems. I've been told by almost everyone I've ever known that I give excellent advice, and when giving her advice I was surprisingly able to distance myself from the situation and assess things accurately and dispassionately.