I think you do need to address this. He needs to help support his family. You just need to tell him how much this is putting a strain on your finances and you are having a difficult time supporting the family by yourself. It appears that you are raising another child. I think he may be having some mental issues. It sounds like a form of depression.
Life's challenges are not supposed to paralyze you, they're supposed to help you discover who you are. -- Bernice Johnson Reagon