It was almost the end of summer going into my senior year of highschool. Earlier in the summer my friend Steve made out with the girl I was getting with at a party. He told me and it was whatever i didnt make a big deal about it. Now its the end of summer and one day me and my other friend Jason, his girlfriend, and now Steve's girlfriend Kristin who is also our friend are taking a hike up this small mountain. It is just the 4 of us and me and kristin are flirting the whole way up. We make it to the top and we split off and it is me and kristin in this private secluded spot. This was my plan to get back at Steve and we started making out. I was only planning on making out with her and feeling her tits but her hands wandered to my basketball shorts and she pulled them down to my ankles. She gave me oral and we had unprotected sex on the top of the mountain. We never told anyone even our 2 friends as we hiked back down.