Don't panic, you can't control what he does! Only what you do! It sucks to lose someone you love! It happens! Do you want to be with someone who does not want to be with you? No you don't, DB for yourself so he may want to be with you, or at least you better yourself.
I feel for your sitch. Kids and money make things worse, look for alternatives to arrange for your and the kids finanical needs. Plan for the worst, hope for the best.
Married:10 years D final 8/28/08 10 minutes is all it took Life goes on and DB was no small part in growing from the Divorce!