Love is a mystery for you can not exactly pinpoint why you love this particular person; but there will be more mystery when she decides to end your relationship.
Then, despite the hurt and frustration, you realize that you love her still and want to get your ex to love you again.
Here is a simple advice on what you can do.
After you pacifying your emotions, concentrate and analyze what could be the possible reason why she left you.
Have a flash back and bracket past events.
Determine who was responsible; is it you alone? Or is it she alone? Or is it both your fault? Have an open mind.
Review the events from your point of view, then from another person's point of view.
If it was your mistake, you will tell yourself that it will not be repeated.
If it is hers, then you can tell her about it when you are reconciled.
In the interim, make yourself strong and do not try to contact and beg her to return to you.
Time is now your ally.
Just have the strong determination to get your ex back in the near future.
Pay attention to yourself by undertaking a self improvement program.
When you happen to have an accidental meet, act cool and indifferent but give her a friendly smile.
You have the aura of confidence and positive thoughts.
You appear to have accepted the situation like a man.
Your ex will now start thinking of you and she will make the first call.
This is a good beginning and there is a lot of hope that you can get your ex to love you again.