Steal his lungs.
Just be honest and tell him that you aren't ready for a serious relationship right now. If he's a big boy, he should be able to deal with that.
So, you want him neither as a friend nor a love interest. If that's so, then just tell him that he's a nice guy, but you don't like nice guys. If you don't want contact with him, then don't worry about it.<br />
So, if you would like him as a friend, then give him the deadly line: "I like you as a friend, but not more than that." I also liked Chiquita69's answer.
fun date, but i just do not feel the chemistry.<br />
if he can not take a hint, move up to **** off, ******.<br />
then a swift kick to the crotch or mace usually does it.