How do you nicely say no, i don't want to be your f@%& friend?

[kddani]

So there's this guy that's a friend of a friend, we hung out a couple times. Every single day he IMs or text messages me trying to invite himself over. Now, he's a nice guy, but we have absolutely zero in common and he's cute, but not really my type. All he wants to do is be my f___ friend, which i'm not really interested in. Now, i have to be nice to him, b/c he is a nice guy and he's a friend of one of my good friends. He's seriously been doing this for a couple of weeks now, and every single night I say no. But it's getting very annoying. Hell, I just got out of the shower and I don't want to take down my away message b/c he's already messaged me asking what i'm doing today and if he can come over.

I think he's just girl-retarded or something.......

But this is annoying.... how can i nicely get rid of him?