First of all, no [b]StIcKy CaPs[/b] ...
anyways, if the guy is not a desperate person he will eventually be contented that he will just be your friend, considering that you have a boyfriend. you should not ignore him if he does not make you angry just because of what he told you, after all, you were friends. try so save your friendship first. if all else fails and he does not give up, then you can start ignoring him because he makes you feel bad. ignoring him without even trying to save your friendship will only make him obsessed with you..