there this retard(hes not really) idiot at my school who keeps buggin me and well just read it,cuz i need help

ok, there is this retarded guy at my school who has a crush on me and he went out with my best friend and he asked me out today and i was like eeeeeeeeeeeeeewwwwwwwwwwwwww!!!!!!!!!!!!!!!nnnnnnnnnnnoooooooooooooooo!!!!!!!!!!!!!!!!!!!!!!!!!!!!! and then my teacher glared at me and after class was over i told my best friend and she said that he liked me and i was like all grossed out cuz he is supper unattractive and has a horrible personality and oh my gawd he gives me a major headache every day!!!and he still wont stop talking to me and my friend even though he talks all this sh!t about her and now i have a really bad headache and i really need somed asprin or something cuz gawd!!!ugh!!!i just wish that he would go away forever and he is sssooo annoying and i need some help with what i should say to him that whont get me in trouble(such as swear words) in school so that he will just stop!stop talking sh!t about all my friends and stop being annoying and stop talking to me!!!!!!!help me