Hello
I'm sorry that this is going on. I can offer some of my experience as well. My husband who has used substances has explained to me that an addict will use the high from the substance to make themselves feel better because they know that they are hurting someone, so they give up. It's not about you really, it seems to be that they somehow use a tough situation as an excuse to use that substance. It makes me really sad but I can kind of understand why that would make sense to someone with a substance abuse problem.