I was the innocent one.
This was how my sex life with a girl started back when I was 15 years old. I was with a group from school and we had just returned from a field trip and was at a teacher's house. We were served soft drinks and was sitting in the living room. One of the girls walked in carrying her drink and all chairs were taken so I started to get up to give her my seat. She pushed me back down in the chair and the turned and sat on my lap. Her name was Brittany and we were friends but that was it. She was a very good looking girl and I always felt I wouldn't stand a chance with her. But, here she was sitting on my lap.
In a while, she moved back a little. Her butt was then sitting right on top of my cock. There are things a boy has no control over and sure enough, it started happening. My cock started swelling and getting hard! I tried to stop it but it was impossible. I had no control over it and it just kept getting harder. Then, Brittany started squirming around on my lap. There was no doubt in my mind that she could feel it and I felt that she was moving like she was just to get me more and more excited. I was fully hard when she leaned against me and turned her head quitely telling me 'I feel something'. I answered 'I can't help it'. She just giggled. She then said 'We need to do something about it'. I didn't know what she meant but it sure sounded good.
About that time, she jumped up and said 'Come on' pulling my arm. I quickly jumped up while holding my bag over my front so no one could see the big bulge in my pants. Brittany took me to the bathroom. We went in and she quickly closed and locked the door. I couldn't believe what was going on. She then said 'Hurry, take it out and I'll jerk you off'. No girl had ever seen my cock before or touched it. I was so excited. I was going to have a girl see and touch it! I quickly dropped my zipper and reached in pulling it out. Brittany wrapped her hand around it and went to giving me a fantastic feeling hand job. I didn't last very long at all before blowing. Cum went everywhere. Floor, shower door, toilet. When I finished, we took the hand towel and wipped everything off.
We went back to the chair and Brittany turned and ask me 'Did you enjoy that'? I told her 'Oh yes. Where did you learn to do that'? She said 'I've had boyfriends before'. This was my first but certainly wasn't my last. I started going steady with Brittany and she ended up showing me a lot more things. She ended up being my first in other things too.