When a woman hurts, she hurts deeply. Her mind and heart get clouded. If you and your girlfriend had a big fight that ended up in a break up, there's at least one thing that you have to do for now – ask yourself as objectively as you possibly can if you would like to get her back once more. If you didn't hesitate and answered a resounding yes, then the next thing to do is to hatch a plan outlining exactly how to get your ex girlfriend back.
If you hurt your ex girlfriend too much (whether intentionally or otherwise), you will need a lot of time, care, and attention to mend her broken heart. Sometimes, she will let you step in ever so gently and take part in the healing process. At most times, she won't. Whatever she decides has a lot to say about your current relationship. If she allows you to see her hurting, that's a good sign. It shows that she's still opening up to you and you've not been excommunicated. You just have to take everything smooth and slow for the time being. That's a big hint for how to get your ex girlfriend back.
It's a different thing entirely if she slams the door at your face and wants you to go away. Here is where the huge challenge lies. How could you get your ex girlfriend back if she's so mad at you? Well, being mad is not always a bad thing. At least you know that there are still some emotions left for you in her heart, albeit negative for the most part. You just have to work at turning things around a bit and transforming those into positive emotions in one way or the other.
One thing you can do is to try to make your ex girlfriend listen. She doesn't have to talk to you – just listen to what you have to say. You can do this by leaving a note on her voice mail, sending her messages, or contacting her through the internet or various forms of social media that you happen to share. Do this repeatedly (but not in a fashion that would be seen as constituting stalking or harassment) until she breaks her silence. She'll more than likely do it once she becomes sure of your intentions and if she becomes convinced that you are true to what you're saying and not pulling a stunt. When that happens, a beautiful restart might just be around the corner for the two of you if you approach for how to get your ex girlfriend back is executed the right way.