Incest has always held a fascination for me. It's not that I ever thought about sex with my mother or sister, I had often thought about it though with my stepsisters. It was this junction that has sparked my interest. When you have sexual interactions with a stepsister is it really incest. If we had met later in life it could have been a one night stand, a blind date or even an interlude between two strangers.
My mother had remarried a short while after my father died. With that marriage I gained three sisters, Sarah, Sue and Jenny.
Sarah was the eldest of the three and was engaged to be married. She never liked my mother, she never liked me and the feeling was mutual. The less I had to do with her the better.
Sue was like no girl I had ever known up to that point in my life. She had blond hair down to her shoulders, a generous d cup pair of breasts and an athletically strong body. She had left high school to do a secretarial degree. She provided me with the inspiration for all my activities and was actively in my thoughts.
Jenny and I were only a couple of months apart. We were both beginning to explore our sexuality and both wanting to rebel against our respective parents. This was to be a recipe for disaster, not for us but for our parents.
As I was the only boy in the house the garage was converted into my bedroom and became my home. I would spend all my time in there. I had a TV, radio, pool table, double bed, my own library and everything a guy could want. Growing up I had certainly not been part of a prudish household. Hell I'd seen my mother naked almost every day and my own sister was just someone in my life who I did not particularly take notice of. Since my father had passed away my sister had become the bitch from hell so I was more than happy to keep my distance from her.
The increase in women in the household invariably led to the odd glimpse of breast that I was not previously used too. In coming to terms with the extra flesh content in the house I found myself most evenings having a permanent erection. This had led me to my first experience of masturbation. I was standing in the shower thinking about Sue, her body and curves and imagining every part of her, it was driving me insane only ever catching glimpses of her. I wanted to see everything of her and was prepared to do anything for it. I had a firm grip on my cock, and with the shower gel over my palm was stroking from the base all the way to the tip. I could feel a tingle in the base of my shaft and never having felt it before eased off. After only a couple of seconds I started again, again I had that tingle although this time it was stretching down to the tip. It was almost painful and made me stop again.
Never having done this and never having had these feelings before I didn't know what was natural and what was not. I still had Sue firmly pictured in my mind, her breasts heaving in front of my face, my pulse racing as I reached out to grab them. It was at this point I felt a surge through my cock, my eyes burst open and I let out a deep guttural moan as my orgasm struck and I shot stream after stream of cum the full width of the shower. My legs failed and felt like rub, I could barely stand and the end of my cock tingled so much that I couldn't touch it without my legs giving way. It was the most intense feeling I have ever had and never since has it been as intense as that first time. I was hooked on this feeling and every night in my room, I had pictured Sue right there beside me as I masturbated time and again to orgasm.
With Sue firmly implanted in my mind I had become intent on seeing more of her. I began to walk in accidentally more on her in the bathroom. She sometimes tried to cover up although they were often feeble attempts at doing so always show me a generous length of inner thigh. She always left the door to her room ajar after her showers. I used these as a sign for an invitation and would creep along the hallway, peering through the gap in the doorway at her getting changed. I would often pull my cock out and masturbate right there, knowing full well that anyone could come along and catch me. This used to make my heart pound in my chest and gave me a sense of delirium where I didn't care for what was going on around me. It was on one of these occasions that whilst standing there I got to see more of Sue than I ever dreamed. She was standing in front of the mirror that allowed me to have a perfect view of her front. She had opened her dressing gown and was cupping her breasts. She was rolling her nipples in between her finger and thumb and was gently squeezing and rubbing them together. I had my cock in my hand, with precum oozing out lubricating me even more. She pulled her hands away from her breasts and yanked down her knickers immediately exposing her perfect mound to me. She slid one hand back to her breasts, the other down her stomach and began to slide it between her legs. I was right on the edge, about to have an explosive orgasm in the hallway when Jenny's door opened right next to me. She had caught me right there with my cock in my hand about to explode watching her sister masturbate for my benefit in front of the mirror.
My cock went flaccid, I ran to my room imagining the worst. Jenny disappeared into Sue's room and shut the door behind her. A half hour later, Sue, my mum and I were sitting at the dining table. My mum was saying it was inappropriate, Sue was sitting in her dressing gown opposite me with a smile on her face knowing full well what we were both doing and I sat there sheepishly saying it would never happen again.