How old are your children? This will affect them sooner or later and it won't be pretty.
My thoughts are that if you want to give this time to see if his actions follow his words, do it from a distance where your children will be safe. And protect your money. A crack addict would spend every cent meant to feed a family and never think twice about it. That's how that drug works.
Keep yourself and your children safe. They cannot protect themselves.
Hugs