The spell page warns heavily against casting that spell and pretty much says you'll likely bring on negative karma, bad luck, etc... as a result of casting it. Anyway you have to ask yourself is it worth it? Your in essence becoming the bully by casting a revenge spell as your cursing them and they likely lack the knowledge and/or skill to deal with it. Instead you might want to look into some kind of protection spell to protect you from them but not outright do them harm. It's your choice but I'd just look at your other options including nonmagickal solutions before I resorted to cursing them.
I actually love this person, but they have always mistreated me for no reason whatsoever. I can't help but love them anyway, though. But I think they need to be taught a lesson: Don't judge people without getting to know them. This might help them realise that, unless there are any spells that will actually make her give me a chance and get to know me before judging me.
Well I actually wrote and posted a spell for friend that helped them teach someone a lesson, but I don't know if it fits your situation exactly. I put a bit of a warning on the spell even though it's supposed to only work, in theory, if they "deserve" to be taught a lesson by reversing your positions (Do unto others as you would have done unto you type spell) but it's still really a curse. Casting such a spell shouldn't be done lightly of course. There are hundreds of spells on this site so I'm sure you can find something that fits your situation if you feel you must use a spell. http://www.spellsofmagic.com/
interesting, personally i would avoid people who mistreat you, but i was in a bad relationship once, so i know it's your call. you could look into a poppet maybe, if you just want to hurt him when he hurts you. there are many ways to make one, though i think ones stuffed with his hair works. you could also go for a chant like 'you messed with a witch' hoe bad do you want your revenge to be? because it could be as little as him falling down the stares, or getting into a horrible wreck.