The boy jumped over the fence, his hair danced in the air.
His eyes met with someone he knew, after he grabbed the fence with his right hand.
That someone, the girl, doesn't know who he was. On the other hand, the boy knew who the girl was.
Both surprised. The girl jumped back because a stranger just jumped over the fence all of a sudden. The boy let out a gasp because he hasn't met the girl for such a long time.