When I was in high school I used to date a girl that was way older than me, she was 21 and I was 16. I was in my exploring phase with sex and was always horny or down for something crazy or extreme. The girl I was dating was also highly sexually active. We used to do a lot of crazy thing like pussy stretching, fisting, and stuffing her with all kinds of things. It got to the point where we used to basically do things wherever we were at the moment or whenever one of us got the urge for sex. One day we were hanging out in the public park by her house and we started messing around in the parking lot. We decided to go walk through the trails and basically find a spot in the trails of the park to have sex. We went and found a nice spot with a fallen tree where we could sit and do whatever we wanted. I literally stripped her butt naked and she started giving me head while I was sitting and playing with her. All of a sudden we heard a tree branch snap. Apparently we were so into the moment that we didn't realize that there was a guy literally feet away from us jogging on the trail. By the time we heard the tree branch snap and looked up he had already passed us and on his way. That's when we both realized that from where we were sitting he saw everything and definitely saw her fully naked. The thought of him seeing her got me really hard and then I noticed that she had gotten wetter. When I asked her what happened, she said that by me getting hard from being turned on by her being naked and another guy seeing, it made her more horny. So after that moment we would go to places we knew a few people could see her and she would strip naked and let me play with her, it literally used to make both of us really turned on and the sex more fun. Since that day I realized that I love having public fun and showing off my girlfriend to strangers. Sadly this came to an end only a few months after when we broke up. Since then I was only able to find 1 other girl who was a true public whore.