If you are trying to get woman back, but you were a jerk to her, you may not deserve her. That may not be what you want to hear but it may very well be the truth. It is good that you recognize that you may have had a problem but what are you going to do about it and why should she want you back? Until you figure those things out you may not get woman back.
Here's what you need to do to get woman back:
1) Change the way you look at women. If you consider them property then you do not deserve a chance. View them as people deserving of respect and do your best to give it to them and you might have a chance. To love women you need to respect women.
2) Change the way you treat women. Chivalry is not dead. Be a gentleman and treat them as queens. If you can pull this off your chances improve. Be subtle about it and try not to draw attention. You don't want to look like you are faking it. They will notice. Women are smart like that and if she doesn't notice she will have a friend notice and tell her. Your credibility may be shot.
3) Learn humility. This will go a long way towards helping you get woman back.
4) Let her know that you were a jerk. If she tells you that you were, just agree with her. If she exaggerates, or it seems like she is, remember that to her she isn't. The only person's opinion that matters is hers if your goal is to get woman back. You're selling and you're trying to get her to buy. The customer is always right.
5) Find out if she wants some space or if she wants you to come begging and then give her what she wants. This will be a tough thing to do. You may have to ask around to people who know her well. She may even think that your efforts to try out are worth giving you a second thought.
6) Try and convince her friends that you are changed. You will have to do this first. They will be skeptical of you and will be most interested in protecting their friend that you hurt. If you can win her friends then you have won the major part of the battle. If you try and get ex back first, you will have trouble convincing her and even if you do, they may talk her out of it. Do you want her trusted friends for you or against you?
7) Don't tell her that you have changed, show her. Words are great but it doesn't mean anything unless there is some action to back it up. You need more than words.
8) Think about the long term and if you are going to be able to make this change permanent. If you can't then you are going to end up in the same place you are now but only with a smaller chance to get woman back.