When I was fifteen my parents decided to take a vacation for two months and I was going to be going to a summer camp. I didn't know anyone when I arrived, but most of the other kids knew each other. I'm not shy but trying to fit in with the other kids was tough. Most of the kids were born with silver spoons in their mouths and bragged how much money they had. My grandparents also had money but I didn't. My grandfather was going to make me earn everything. A week in I was breaking the ice with a few of the guys. I was good at sports and we won a few games against other camps.
During a social I meet a girl names jen. We hit it off great and in a few days we were kissing and making out. One rainy day my bunk and jens bunk were able to go to the boat house and watch a movie. The girls all brought blankets and jen and I sat in the back with my back against the wall. I had jen between my legs and we started to fool around once the staff left us alone. Jen was wearing very loose shorts and I had my hand in her shorts. When I made contact with her vagina she jumped. We looked around and everyone was watching the movie. She looked at me and smiled and kissed me. I did it again and jen let me slide my finger up and down her vagina. Her panties were getting wet and she was moving around a lot. Her breathing was getting faster. The films first reel ended and one of the campers changed it. Everyone got up to stretch and jen went to the bathroom. When the film started jen came running in and slid under the blanket. In a few minutes my fingers were back to her shorts and when I went to her vagina I found no panties and her vagina. I started to rub up and down and jen was moaning softly. I kept sliding my finger up and down. I even slowly put my finger into her vagina. After Jen moved my hand to her clit and I rubbed her off until she had an orgasm. Jen eyes were closed and when she opened them she looked at me and said wow. Once the movie was over she gave me a long kiss and went back to her bunk. When I arrived at mine everyone was asking what they received. Most felt tits so I said the same. After lights were out my bunk mate told me I didn't get tit, I said why not. He said him and his girl watch me masturbating her. I smiled and went to sleep.
On visiting day all the parents came and I was going to be alone. Jen came up to me and invited me to enjoy her fathers, Step mom and brother. I said okay and went to my bunk to get dressed. I went to the tree where jen told me to meet them. I saw jen walking with a man who I knew was my third cousin. When he saw me he laughed and asked how my parents were. Jen looked at him and asked how he new me. He said my father and him were second cousins and we were third cousins. We looked at each other and were speechless as it turned out we were related. We asked what it meant and he told us about it. After visiting day we met and tried to think things through. We decided it was best not to stay together sexually.