R.
I have been through a divorce, however, we did not have kids so it made it easier, and I can't imagine having to do that now that I am a mother. I am not familiar with your story either. That being said, here is my thought. I think it would depend on the relationship you have with him now. If it's pretty good and things are running smoothly then I would tell him and not surprise him. I would imagine it would make him angry if you knew and then had the papers served out of the blue. That could strain the relationship again. On the other hand, if your relationship is strained and every time you talk you argue then why tell him. Save your self some stress, at least for a little while. GOOD LUCK!! It's nice to see you are happy at such a difficult time in your life. That will make all the difference in your future.