Under the stars fuck

My parents where friendly with a couple that had a 12 year old daughter. One evening we went over to their house for dinner. I was 17 at the time. After dinner my parents and the other couple were talking and drinking so me and the 12 year old went outside. She was well developed with budding breasts. She wanted to lay on the grass to look at the stars in the sky. We were laying there and after about ten minutes, her hands started rubbing my groin which gave me an instant boner. I began feeling her up and after a while, removed her panties and was feeling her pussy. She was wet and I was hard as a rock so she unzipped my pants and took out my cock and got on top of me pushing me into her wetness. I only lasted a few minutes before I came in her. I told to go and cleaned up as she was a real mess with grass in her hair and cum running out of her pussy. IT WASN"T HER FIRST TIME!!!!!