If your banking on recovery bringing back that fun guy who gave you compliments and showered you with affection in those first few months of dating, your investing in the wrong place.
Invest in yourself, you don’t need to hang on waiting for him to become the person you began dating. He was probably using during that time anyway just not in front of you.
It’s not hard to understand why he’s divorced is it? How long did his ex-wife hang around waiting for him to change?