Every one referred to us as a beautiful family. Dad and I were the "tall, dark, and handsome" end of the deal. Mom and my stepsisters were the "holly shit they are gorgeous" end of it.
Mom had adopted the sisters before she divorced her first husband then married Dad. My father had adopted her daughters. We had been a family for eight years.
I was in my first year of Community College. My older sister Abby was in her second year at the same college. My younger sister Lydia was a high school senior.
Abby and I lived at home, partly to save our parents money, but mostly because we wanted to.
That summer a nice family trip to the beach had changed my life. I was in waist deep water watching the girls on the beach and caressing my semi-hard dick when suddenly my sisters attacked me. They climbed all over me trying to dunk me under. I was much bigger than either of them but their combined efforts made it a fairly even war. I managed to hold my own for a while.
Then my hands accidentally ended up full of tit. The tit belonged to my older sister Abby. She continued the game as if it did not matter to her where my hands went. My concentration wavered between winning the game and grabbing more tits. I was in danger of losing.
My younger sister Lydia quit the game when I managed to pick her up and throw her into a wave. I did not think it was getting smacked by a wave that made her quit; I lifted her by putting my arm between her legs. The process of throwing her resulted in my hand making hard contact with her pussy. She now stood six feet away and watched her older brother and sister continue their play. She looked confused.
My hands found Abby's breasts and hard nipples repeatedly and hers soon found my erection. The third or sixth time her hand gripped my dick my hand was on her crotch, I ejaculated.
She kept on playing for a few moments then apparently realized what had happened. She came to my very rigid body and hugged me as she pressed her thigh on my rapidly shrinking dick. Between kisses she whispered, "I win."
As I watched my sisters leave the water I was catatonic. My intelligence level had sunk to the level of slime mold. I had felt up my older sister's tits and pussy and repeatedly gotten away with it. My sister had squeezed my dick and had made me cum.
A large wave slapped me on the back of the head and brought me back to my senses. I allowed the waves to swirl me around for a bit as I lowered my swimsuit allowing the water to rinse out my cum. I was strangely calm for the rest of the day.
I had always loved Abby dearly because she had never treated me as her bratty little stepbrother. We had been at times each other's best friends. We often found ourselves holding hands and although that never lasted long we always regretted separating them.
We kissed on the cheek often, on the lips on special occasions but all of those things were also true for my mother and little sister.
Yet the week after our beach war my outlook on life changed and I began to use Abby in all my sex fantasies. I became very much aware that the sexiest, most beautiful, most desirable females in the world lived in my house. The slightest display of anything a nineteen-year-old boy would see as erotic triggered a raging boner. That meant I had one all the time.
Dad pulled me aside for a talk. I relaxed a bit when it became obvious he was not going to kill me. He said Mom and the girls asked him to have a word with me. My boners were a distraction to all and Lydia was particularly embarrassed.
He said that my reaction to beautiful women was normal, even if they were my mother and sisters. He suggested that until I had better control of my dick I should wear jock strap under my gym shorts. He admitted that there were days he had to wear one too.
I said, "But Dad, they are the ones causing the major distractions!"
Dad laughed and agreed. He added, "However, gentlemen are cool and you and I are gentlemen. We handle anything with grace. We cater to the sensibilities of ladies. We may have to run to the bathroom to jack-off but that is what true gentlemen do."
I was reminded again why dad had always been my hero.
My new philosophy became "gentlemen handle it." Some days I had to wear a jockstrap and underwear, but I managed.
Abby was not always helpful, however. Sometimes she took a bit longer than necessary to cover an "accidentally" exposed tit. The back of her hand would make "accidental" contact with my dick as we walked past each other. Some of her kisses included a quick darting tongue. My groans would send her into giggles. It was infuriating but I took it like a gentleman.
I did notice that Dad would often be at half-mast. I also noticed that not all of those semis were caused by Mom. Abby was on his lap often.
As time passed and I made more contacts at the college I started getting laid more or less regularly. My sexual tension at home eased and I could go commando on most days. My sister Abby had a steady boyfriend and most of her teasing stopped.
This brings me to my present predicament. I was getting undressed getting ready to go to bed when I suddenly remembered that I had borrowed a CD from Abby and just walked into her room to return it.
I froze on my tracks two steps past the door. Abby was naked on her bed. She was masturbating at a leisurely pace. She was staring at my dick as it rose, escaping through the opening of my boxer shorts, exposing its head.
The motions of my sister's hand on her pussy mesmerized me. The hand pinching her nipple riveted me. I was not aware that I had started to stroke my exposed dick.
She motioned me to close the door behind me. I did so, assuming it was OK for me to remain in the room.
She resumed masturbating and so did I. We kept our eyes on each other. Suddenly her body arched off the bed and she moaned. That did me in and I shot my cum all over the place.
I recovered quickly, took my shorts off and used them to wipe my cum off the floor. One blob landed near the bed. As I rose after cleaning that one up I took the time to get a good look at my sisters naked body. She had one knee up, slightly to the side. I had a clear view of her treasures. She smiled and held her pose for me. She was magnificent and I told her so.
Oddly, for a girl that had just masturbated for me, she blushed.
I quickly gave my sister a soft kiss on the lips, said "Thank you," and left her room.
Before I closed the door I heard her say, "Anytime."
We had taken a step that could lead us anywhere.
We had one college class in common and once a week on Thursdays we studied together. Most of the time we concentrated on our studies but some nights we ended up talking more about our love lives.
She, of course, could have any guy anytime but boyfriends did not seem to last very long. She said the special guy in her life was just out of her reach.
Over time our conversations began to center on our sexual likes and dislikes, on good lovers and bad lovers. We each knew every one the other had fucked and there was the occasional, "Ooh, how could you?" taunts. I was not surprised that I had many more sex partners than she did. I had a lot of weekend affairs and she had her four former steady boyfriends and one she would not name.
One night I idly asked her who had been her best lover ever. We had been doing some real studying and her mind was trying to absorb book data.
She shocked me when she said, "Mom."
