Only curse him if he deserves it, if he just isn't interested in you and politely shrugged you off then don't curse him. I've had a few girls interested in me, but I definitely wasn't into them, and I politely shrugged them off... afterwards, their brothers or friends would try to gang me (beat me up) just because their sister or friend (w/e she was to them) got denied... My point is, people have the right to be with who they want, not who they don't have feelings for. If anything, if you REALLY want this guy, why not try some love magick on him? Make him like you through spell workings, do it the right way... Know what I mean?