Most Helpful Girl
Don't stop texting her, send her flowers, do nice things for her. Apologize and be really genuine about it.2
Most Helpful Guy
I think you need to stop pushing, she will pull it back even more.
Let her cool down for a while. Keep in mind that this is the 3rd time, and it could be very well be the straw that broke the camel back. Give her time to miss you, but if she really have no feeling for you anymore, be prepare to move on.0