How can I get rid of this stalker?

If he's small or a bit of a try and get a boyfriend or just a boy mate to get the wierdo to go away. If he's violent then you should worry a little more and get the police, parents or school involved. You may not want him to get in trouble, but make him understand that he is being a wierdo and if it carries on then you NEED to take care of it :/