sucks you broke up and still have feelings for her, but you broke up for a reason. we know nothing about the situation, if she broke up with you, it means she wasn't happy, if you broke up with her, sorry to say she's moved on and perhaps what you feel is jealousy, wanting what you can't have sort of thing.
this is no emergency, it's just a crappy situation for you. try talking to her. you could try spells, but you're forcing your will onto her, if the spell works she'll return but not because she loves you, but because you cast on her.
it sucks but this is life, try to get her back, but if she's happy and you really do care about her, you should be happy for her.
Forcibly making a specific person love you (or whoever) without their knowledge or consent is generally considered wrong. This is because it violates their free will and there's a good chance that they won't actually be happy in this relationship. A break up spells serves the same value.
Loving a person doesn't only mean having passion and good feelings for the desired person. It additionally means that you should have good intentions for this person, you should care about this person and their feelings, and you obviously shouldn't hurt this person and force her to do what you desire. That is basically a symptom of obsession for a loved person, which may end up very bad. Healthy love isn't only having the right feelings, it's also taking the proper actions in order to deserve having these feelings, such as love and passion.
So if you're saying that you actually love her, you should see the list of factors of true love and know that what you're doing is wrong according to what they tell you.
If you and her were meant to be together, it will happen. If not, it won't happen. Let things be how they must be.