Help me pleeease...i made a boy cry ?

i made a boy cry today.....well i through this paper at him and my friend lied to him tht it was a dude who was walkin by......then he started cryin cuz he thought everyone hates him.....i didn't mean to make him cry..he was really tall like more than 6 feet nd he's a special kind of person whatever you call them tht are kind of mentally diffrent....i threw the paper at him as a joke cuz my friend dared me too nd his friend (who i like) saw me throwin the paper at him nd i'm kind of embarrased....what should i do??