^What Admiral said.
It seems that taking up the pot can only help to reinforce patterns of behavior that you've worked hard to change over these several months. I think you need to talk to your spouse, both about the presence of his friend and how their behavior is influencing you. Also, it seems that your husband's alcohol use could be an issue, at least in terms of making it tougher for you to get some space from your old life. If you were to bring these things up, do you think that he would be supportive? I do hope so.