I'm mad at my boyfriend for getting drunk
Why are you mad about this?
Because his behavior was so unacceptable.
Is this something that happens a lot. I would not worry if this is not something that happens regularly. It is normal to cut loose every once in a while.
That makes sense.
I'm glad to hear agree. It might be a good idea to keep an eye on his drinking behavior, because there is a point when it becomes problematic.