When I was about 18 or 19, I was in my first true long term sexual relationship with a boyfriend. I had a high libido, as did he, and wanted to do it at least every day multiple times a day. Since neither of us had our own apartment yet, we often wound up having sex in public places like fitting rooms or outside. Since we weren't allowed alone in bedrooms at my mom's we fucked in the basement while pretending to do laundry, or kept doors open during quickies so nobody would suspect anything.
Luckily, he had a car, and we would often park. However, there was one time we were driving and I was so horny I was soaking through my underwear. He was the driver and I pulled out his beautiful dick and started stroking him. He was tensely hard, pre-cum oozing out. I licked his tip but wanted more. He tried reaching over to stroke my pussy. His fingers slipped easily over the outside of my lips, but it wasn't enough, I wanted to feel him inside of me.