A Girl's First Time

I had just turned 13 and was just beginning to enter puberty. Most girls start around 8 to 12 years old so I guess I was a really late bloomer. I got a growth spurt and was now just as tall as some of the other girls in my class and taller than some of the boys as well. I was a fairly skinny but athletic girl who did tennis and swimming. My blonde hair wasn't too long - it just managed to reach my almost non-existent breasts. I had very little hair on my white-skinned arms and legs, and barely anything in my crotch area. I was envious of all my female classmates who had bigger breasts and more hair on their bodies. I couldn't help but compare my body to theirs when we changed for PE. I wished my body would hurry and catch up! One day, a new family moved in next door. The family consisted of a mother, a father and their two sons. The youngest boy was named Mike and he was 8 years old. The older boy, Jack, was 15 and he looked really handsome. I remember the first time I saw him walking across the lawn from the street to his house, helping his parents carry boxes from the truck. I shyly glanced out my bedroom window to stare at him. His short black hair and slightly muscular build was to die for! Over the next few days, our families were introduced to each other and I quickly became friends with Jack. We shared a love of reading, movies, video games and sports. About a week after he arrived, Jack invited me over to his house to swim in his pool. His parents and little brother had gone shopping, so it was just Jack and I. We splashed around the pool for about an hour, cooling off from the intense summer sun. Jack wore a pair of plain blue shorts to swim, while I had a bright pink bikini on. I noticed him staring at me from time to time, admiring my body. He didn't even tried to hide the fact he was looking, although I pretended not to notice. When we had finished swimming, Jack and I got out of the water and relaxed on some chairs near the edge of the pool. We talked for a few minutes about returning to school in a month's time, before Jack said he had to use the bathroom. He walked over to the small bathroom/change room area at the other end of the pool. I relaxed on the chair, glancing up at the clear blue sky. After a few minutes, I had to pee as well so I went towards the bathroom area. When I got there I noticed there was a slight crack near the door. Curious, I peeked into the crack. I was just able to make out Jack sitting on the toilet. Then I noticed Jack's penis, which was erect, hairy and pointed straight up. I guessed it was about 6 inches long. I had not really had much sexual thoughts in the past, but suddenly I felt a rush of excitement at seeing the private parts of someone from the opposite sex. Jack's hand then came into my view and he began to pump his penis up and down. I was intrigued. I had heard of the other girls joking about guys ''jerking off'' but I had never given much thought to it. After about a minute, I saw some white stuff shoot out of Jack's penis. One rope landed on his chest while the rest just poured out onto his crotch. He used toilet paper to clean up and got out of the bathroom. He was a bit shocked to see me standing right outside the door, but just asked me whether I had to use the bathroom as well. I told him yes and he said he would be heading back inside the house to change out of his shorts. I went inside the small bathroom and closed the door. I looked out of crack I had used and saw Jack walking back to the house. I pulled down my pink bikini bottoms and sat down on the toilet seat to pee. When I had finished, I used some toilet paper to wipe my vagina. As I was doing so, I brushed past my clit and felt a surge flow through my body. That felt great! I dropped the toilet paper into the bowl and started to rub my breasts using both my hands. I noticed how puffy and hard my nipples were, and this turned me on even further. I continued to fondle my own small breasts, thinking back to the image of Jack's penis. I imagined that it was actually Jack's hands rubbing my breasts, that both of us were naked and we were exploring each other's bodies. After about two minutes of rubbing my breasts over and under my pink bikini top, I felt my vagina pulsing, desperately needing some attention. I began to softly rub my clit with my right hand while my left hand ran through the other parts of my vagina. This was the first time I had touched myself like this, and was both excited and nervous at the same time. Again, I imagined it was actually Jack who was touching my privates. I kept rubbing and touching down there and soon I got a strange feeling, like nothing in the world mattered but my vagina. I rubbed my clit harder and faster, harder and faster, faster... faster... Eventually, I couldn't hold back anymore and let it all out. I was disappointed that there was no white stuff like Jack, but a stream of clear, sticky fluid came out of my vagina and poured into the toilet bowl. I was ready to go again but decided to wait until later. I flushed the toilet, pulled up my bikini bottoms and washed my hands. As I opened the door, I noticed Jack was standing near the door, right where the crack in the wall was. He was still in his blue shorts and said he decided to come back to the bathroom and wait for me. Sure...