How did you lose your virginity?

Ok, I'll start... I was 13 and My friend invited (Girl) invited me over to play with her new basketball hoop. I went over and everything was going normally, just us playing some basketball until she suggested that we should take a break. She went around to the side of her house and told me to follow her. We went behind the shed and she crouched down and unbuttoned my pants. I had no clue that she even liked me or that she would do such a thing. Then she pretty much gave me head and after we went back to basketball like nothing ever happened. We did it every time we met for that summer.