Sorry I haven't been keeping up with this!
To all the people freaking out about calling the cops: I have no intention of calling the police unless I absolutely have to. Like most everyone else, I have no desire to be in contact with them, let alone get this guy in trouble. Screwing him over is not and never was my intention. This resolution will be reserved for only the most extreme case.
To all the people freaking out about assuming he's on meth: earlier in the thread I stated I don't know for sure that its meth, but I have scores of friends who use all kinds of drugs (except meth) and none of them act like this. Call it an asshole assumption, but that's what came to mind. When someone tells you they've been up for days, you assume they're on meth. Sue me. Also, I don't give a fuck what he does, as long as it doesn't affect or harm me - something else I stated in my original post.
Thug passion - fuck off.
As of today, I haven't seen him in a few days. Monday night he came banging on the door to get drunk but my boyfriend quickly deterred him. I think it's very probable he has some kind of mental health issue, when I spoke to the management about the balcony incident, they told me that his mother pays all his bills. When my boyfriend took him to the liquor store on Sunday, the neighbor made some comment about getting some guns and shooting people. I'm not trying to unfairly judge this person or be an asshole, but his behavior is incredibly strange and sometimes scary which is what prompted this thread.