I don't really know what answers you are looking for. You're a nurse....if he OD's you know what to do.....start CPR and call 911. You also know that
As far as thinking it will get better...it won't unless he wants it to.
I was a nurse for years. I am not, now, because addiction took over my life. Please, don't think "he's not stupid enough to bring drugs in the house"....I wasn't stupid, but I did a lot of stupid things when I was using. Addicts do not think rationally when they are using.
He's using substances to avoid life....take it from someone who's been there. He's also probably lying about how much he's using. He will continue to do the same, and probably get worse until he faces some consequences. I can't think of any addict who just quit. As long as he can get high and get away with it, why would he change?
Hugs and prayers!
Amy