Hello & Welcome,
What a BIG drag that he had that much clean time in. That is why we highly recommend aftercare-support from groups or others. It could be the H or even some meth-crank in my days that he is smoking. Addiction is a DISEASE and we can not go it alone. Try to find some info on Addiction and even Addiction and the Brain. There are TONS of videos out here now days that maybe he will watch.When I came clean back in 2012 I spend yrs researching all of this. This info will help you understand a bit more on the why's we can get addicted to things so easier then others ,and all the brain chemistry that gets altered, has alot to do with why we do the things we do, or how hard it is to get off this ride. This disease is a BAD one! It will take work from him to come clean & stay clean. First the addict has to ADMIT he/she has a problem. There is help and education out here on all of this. Sometimes we can have depression, board-em/lonely, anxiety or just plan oh want to escape the world. Most of us liked the UP feeling these type of drugs gave us and the Energy we had gotten from them. However, this is no way to live life and when one realizes this they can get the help they need. I sure hope & pray he will get help!
I do wish you all the best and we are here for you. Keep checking back, I am sure others will chime in.
Very sad. Please get into alanon NOW. Do not threaten, beg, plead or question him, it's useless. You will be having to make a decision. You'll need to rely on the strength you have,not hoping for the man "you know he can be." That guy doesn't exist right now. Good luck to you.