When I was 15 I lived with one of my good friends for the summer. His family had adopted a very hot girl, named summer. She was 100% colombian, 4'11, 98 pounds, and a very nice 34A chest, and one of the nicest little butts ever.
At the time she was 13 and really starting to get attractive. We would often go swimming or hot tubbin, and it would always lead to me having a raging hard on. I would always run up to the bathroom and jerk off.
After about a month living there she started to leave her clothes in the bathroom after she took a shower, I would run in and wrap her bra around my dick and jerk off with that sexy silk feeling.
So one day I heard the shower running but the door was a little open, after it turned off I waited about 30 seconds and walked in... I saw the hottest girl EVER! It was an instant hard on. She was embarresed at first and looked down and said 'I knew you liked me, but wow!' Then she dropped her towel, her body was to die for, she asked me if I ever jerled off thinking about her, all I could do was nod.
With out saying a word she came over and grab my penis, she started pumping hard, driving me nuts. I was grabbing her left boob and sucking her right, it was heaven. After about 5 minutes I shoot a huge load all over her flat stomach, my dreams had cum true. This lead to a very great summer, with lots of more great stories.