Wants to leave again after a month!!!

[DFE]

Got an email from H today saying that we will obviously not come to an agreement. He will sign a lease on Monday and will go away for a few days. He will move when he gets back and file for D. He wants 50/50 custody and will not sell or give me the business.

Everything inside of me wants to tell him to reconsider but I just don't even have the words. He is throwing everything we have built down the drain. My kids will not grow up with both parents in the house. And the D will be a fight. I feel he came back to give it a chance but expected results too fast. We had a month before he wanted out. We didn't even have time to schedule marriage counseling or go to the marriage retreat I wanted to talk to him about.

Do I talk to him one last time or just let it go? Once he is gone I am closing this book and moving on. This has gone on too long. Help.