Hey - I'm with you.

I am up too. I was just getting teary thinking about my whole situation. Currently separated - I filed for divorce and should be final in a few weeks if we continue moving forward uncontested. Almost unreal to me - I can't believe that in a few weeks I could be divorced and never talk to my H again.
You sound like you are already totally out of the relationship. I'm sorry you are hurting. I understand.
What has helped me just now was starting to make my thankful list all over again - I can already feel myself feeling more relieved than sad. At least not so sad that it's almost unbearable. It also helps with the desire to reach out.
My thankful list that helps is DIRECTLY related to the relationship... . basically all the things I start thanking God for that I don't have to go through or feel anymore now that I am away from a sick abusive husband.
That definitely just helped me - I am going to lay down now to go to sleep. Maybe it will help you too to focus that memory toward all the things that made you miserable and why you are OH SO HAPPY to be out and moving forward in your life.
If you can't get relief that way - remember this feeling WILL pass. It is not forever. There will come a day when you don't even miss or think about your ex. You will get through this. Peace to your soul... .