i was about 15, i was on vacation staying with my grandparents staying at there lake house. I usually stayed there with them in the summers to get out of the city. I met some friends there that i would see every summer. it was a great time. one monday my grandmother told me that they had to go back to there house, my grandfather had some appointments and would be gone for about four days, she told me i could stay, but had to check in with the neighbors everyday, that was not a problem.
The next day, i walked down to the store to get a coke. I met this guy who was a few years older than me. we started talking and he said he was a senior in high school. wes strated to hang our when i wasn't trying to get in this girls pants i knew, he made fun of me with that. anyway he came over one evening and asked if i wanted to take a ride out on the lake, i said ok, so he got his boat and we went out on the lake and out in the middle was they two small islands, we got off on one of them and started walking around and he reached over to me, grabbed me and started kissing me, i fought back but he was stronger, soon i gave up, then i realized i liked it, i was letting him put his tongue in my mouth, i was getting excited, soon i reached for his cock and started rubbing it, then i got on my knees and sucked him off i had never done that before, but i enjoyed it, soon we were on the ground, he was sucking me and then he rolled me over and slowly and steadily pushed his cock in me, i was loving it, he then fucked me let his cum loose in my ass, we spent the entire night out there just fucking. this was my first but not my last bisexual experience, we spent the summer fucking and sucking.