Whyd he do this?

Okay,i'm in the eighth grade and this morning I was walking in the hallway and this dude was like hi I said hello,then he grabbed my hand and was like you're my new friend.Then i broke away from him and then he said aww man.Then i proceeded to my homeroom cl.I was wondering all day,why'd he do that?(oh yea he was kinda cute but one of my teachers who knew my parents were both watching so um yea O_o )