When I was 15 i had a boyfriend who was 21, he wasn't my first. When we first got together he didn't want to use condoms so I went on the pill.
A few times he would leave work during his dinner break and pick me up in his works van when I had my dinner break, a 2 minute drive away there was a quiet tiny car park where we used to go in the back of his works van so we would go at it like rabbits. I was on the pill so no condoms needed and he always came inside me. It was when I was sat in class I could feel how wet I was from his semen. I thought how kinky and cool it was sat in class knowing I had a bit of my boyfriend inside me, my friends knew I had been with him as well, they asked things like how good was he, does he have a big one, did we use condoms etc. Some were jealous as he had a car who taxi'd me everywhere while their same age boyfriends hadn't got cars. It was new and exciting at the time.
I was giving blowjobs at school for $10 when i was 14-16, just to a select few who could keep it secret for a while. Stopped when word was getting round too much.