I have always had sexual fantasies about my younger sister who is 14 and I, but had never thought anything would ever happen. She is a very gorgeous girl but I know she had never done anything with anyone or had a boyfriend before, just like me (I had never had a girlfriend up to then).
This particular day, I had got home from a long day at work and decided to have a bath which I normally do not do. No one was home at the time which gave me a good opportunity to have a nice long bath. Once the water and bubbles were in I lay down in the not too large tub. Since no one was home I didn't bother to lock the door.
I was laying there relaxing when my sister opened the door and looked at me in shock. She didn't see anything as I had bubbles covering my legs but was still shocked to see me there naked. She said that she just got home and didn't know I was home either and thought someone closed the door by accident. I said it was fine and everything and she can sit down if she wants so we can talk and I gestured her to the toilet.
By this time I was rock hard but was able to hide it. She looked a little nervous but then asked if she can see my penis. I was excited and just sat up a little bit to reveal my hard wet and soapy dick with a good thick bush of pubes around it. I started playing with it and she asked if I could masturbate in front of her because she wants to see what it's like. I was excited but said only if she takes her clothes off and masturbates for me too. She hesitantly agrees and took off her shirt to let her boobs drop and slid down her pants to reveal her tight pussy with a bit of hair on top.
I was so excited and horny to see her fully nude. She slowly started rubbing herself and she said this is the first time she has ever masturbated. I jacked off quickly and shot over five ropes of cum about two feet into the air and more onto my hand and in the water. This was one of the best orgasms I've ever had and it felt so amazing.
She continues to rub herself faster and had her very first orgasm right in front of me. We continued to do this kind of stuff whenever we had free time and even jacked each other off many times and went further than that, but that's not for here...