I don't know your faith base, but you may want to try Celebrate Recovery. I say that b/c it starts as a large group where you could go together, then separates into small groups according to your needs, men w/men, women w/women. There are chemical dependency, codependency, etc.
My X and I usto go together, we also took our kids as they have children's classes as well. It was nice.
Just something to think about. Good luck!