My crush blocked me on Facebook! What should I do?

[Annonomous16]

There's this boy I really like in a few of my lessons. The thing is he seemed to like me too but on Facebook I jokingly made fun of his name and he found the joke really funny then I accidentally sent a long jokey rant about maths lessons to him instead of my friend. People joke that he has no sense of humour even though he does and in science he seemed kinda upset when people were teasing him about this. I inboxed him apologising explaining it wasn't meant to be sent to him and joked that I hoped i didn't offend him as he doesn't get comedy then he just messaged back "what??" And instantly blocked me straight after. I don't know what to do?