BM take a break from all of this. You can't control one's bad behavior, no matter how hard you try.
Accept that this is who he is now. Can you file for legal separation to keep from owing any of his new debt rather than for D or is D a better option for you?
Don't bother with telling him what he should or should not be doing. It all falls on deaf ears and we then look like the bad one.
Hugs!
Me 50 H 42 S 22 S 9 D 7 M 12 T 17 H moved out 8/2006 H moved home 1/2007 for 3 weeks H moved home 5/2011 for good
"Learn from yesterday ~ Live for today ~ And hope for tomorrow"