Should I write a mean/nasty message to this annoying guy?

He just doesn't get it! He is so clingy & won't get off my vagina. He tries to get in my heart, in other words, he likes me, but I don't. I tried to tell him nicely, but he just doesn't get a clue! He tries to tell my friends to tell me to go out with him & reasons why I should, but that just cuts RIGHT THERE. THATS IT. Should I tell him off by writing a mean & nasty message to him so he understands?! I don't give a bleep if anyone hates me for this, but if you know me in real life, I'm a truly blunt person. =P