unabashed

I guess I think it's odd that a boss would provide alcohol for his employees at the end of every work day. Most employers are wary of having employees who drink too much. Someone with a propensity toward alcoholism could really be in trouble at that job. The whole thing sounds very odd. But, hopefully, you and your boyfriend will be fine. It sounds like he has some self-awareness and self-control. If someone is typically verbally abusive when drunk, this isn't something that normally changes, though, any more than a tendency to be physically abusive.

Did you write that? I think it's great!