Are you trying to decide if you want to win him back, or do you want to move on? Of course, either way will be difficult for awhile.
If you are wanting to win him back, there are some things you must do.
Take a long, hard look at the relationship.
Be as honest as you know how to be when you reflect on what the two of you had.
If you look back and you see only the happy times, you are not being honest with yourself.
When you see the relationship for what it was, deciding if you want to rekindle the romance or move on will be easier.
If your decision is to rekindle the romance, you must apologize to your ex for the things you did that brought about the breakup.
No doubt you told him you were sorry when he walked out, but he probably did not hear you, or if he did, he did not believe you.
You need to be able to apologize for the things you did.
This time he may listen because he knows the relationship has ended and you are sincere.
You need to be able to talk with him without falling apart.
Plan what you want to say ahead of time so you can say what needs to be said without a lot of emotion attached to it.
When a romance dies, it usually is not only one person's fault.
Undoubtedly, your ex played a part in ending the relationship.
He, too, should be ready to apologize.
But remember that the only person you can do anything about is you, so take care of your part.
If he does not apologize, so be it.
You should begin to work on forgiving him for whatever he may have done.
You can do this and you can be sincere about it.
Forgiveness is an act of the will, it is a decision.
And, every time the pain of the breakup and his not apologizing comes to your mind, decide again to forgive.
You burden for the breakup will be so much easier to bear if you do.
Another thing you need to know is forgiveness does not necessarily mean you will restore him to the position he held before the relationship ended.
Assuming that the meeting and apologies go well and your ex wants to restart the relationship, be aware that later in the new relationship the ugliness of the breakup may come up again.
If you have not truly forgiven your ex for the breakup, the pain of it will become fresh again.
You would not want that to happen.
One other thing.
Allow your ex to see you are still the person he fell in love with the first time.
Obviously there were things about you that attracted him in the first place.
Work to bring those things back into your life.
If you were kind and generous, or thoughtful and loving, begin to practice those things again.
Before long, they will be habit, and your ex will remember why he loved you and want to give the relationship another try.