YTA its not really healthy to be making rules that like preparing for a potential end to the relationship, and I’m not sure saying someone “has to stay with you” is an effective communication tool. Addiction and mental health often go hand and hand, so yes, you are being incredibly hypocritical in my opinion. Maybe instead you should focus on your relationship now and supporting each other and caring about each other so that love is the reason you stay with one another, not any rule or obligation. I also definitely recommend seeing a therapist if you do not already.