Only serious dragged out brawling fight I ever was in was with a girl over my boyfriend. Well, technically, he was her boyfriend also, but he was my boyfriend FIRST. **God, I loved high school.**
This happened in front of said boyfriend and his friends. The girl and I traded words about him and who was going to be in front of him. Then came the pushy-shovy part and before you know it, we're both on the ground, rolling around and trying to tear each other's clothes and faces off. The guy stood there for a few minutes with a grin on his face before he and his friends waded in and stopped the fray.
And I still see this guys every so often around the neighborhood still. First love and all that.