I think there is something wrong in this picture, do you?

Okay, well, there is this kid in my 1st hour. He seems pretty nice, but I don't really talk to him. So, I've had a crush on him for a while now and so I've recently added him on facebook.
Well, I messaged him;

'Hey. What's up?'

(Long story short, my name isn't my real name on facebook, so I expected him to either go 'who is this' or recognize my picture and reply with something)

So he reply's;

'F--- you'

I'm like WTF? I'm really confused right now. Does anyone else see something seriously wrong with that? Isn't that just a little bit odd? Why would you reply like that?

Ugh... Well, guess I don't like HIM anymore. lol