Well, okay, I admit that WAS funny, Wolf. Still, I'd like to remind everyone that she DID ask whether it was a good spell or not and thus a serious answer is in order.
So, here are the things that are wrong with this spell in my opinion. First, I think that before you do ANY spell, you should try to solve human interaction problems with direct communication. So, confronting him with your feelings should be a first step, before any spell is cast at all.
It seems that the ultimate purpose of the spell is to bring him back to you, but you want to make him suffer first? Lots of negativity here. People will disagree with me, but I personally prefer to abide by the rule that allows no interference with other people's free will. Why not simply do a spell to help you quit obsessing over him?
I don't really see what being "goth" would have to do with anything. As far as I can see, that's a pretty subjective and poorly defined term plus it seems to have more to do with superficial appearance than anything else.
I don't understand the color choices of the candles and I don't think the incantation is especially well-written either.
In short, it all seems quite silly to me, which is good because it could be dangerous in ways other than the "goth suicide" thing if there were any chance it would actually work.