<human>: I have this friend. He's my boyfriend's roommate, but we were all friends before my boyfriend and I got together. I spend the night at their house a lot, and lately it seems that I've become part of "the pack," insofar as that our friend has started treating me as shitty as he treats everyone else in the house.

Examples: Slamming doors and stomping around the house early in the morning, breaking dishes, days of silent treatment, sarcastic comments, general assholery. He passes out drunk a lot and leaves things going in the slow cooker or simmering on the stove, and yells at the whole house in the morning because either A) nobody turned it off, or B) somebody turned it off. If this was occasional I don't think anyone would mind so much, but it's almost every day. He wakes up angry and stomps around the wraparound porch at 7am...there's nothing to do out there, so presumably he's just trying to make sure he passes everyone's bedroom and wakes them up, too.

This morning I was having trouble starting my truck in the cold (it's an old truck that I haven't totally figured out yet, I literally bought it FROM HIM yesterday) and he came to my window and said in a nasty voice "Gas makes it go, sweetheart" and walked away laughing. 

It ruins my fucking day to be woken up by him trying to let everyone know he's in a bad mood. He never tells anyone what's wrong. One of the women in the house is pregnant and is struggling with the added stress of him waking her up all the time.

I know it isn't my job to speak for anyone else in this situation--he's not my roommate--but I'm there a few nights a week and I'm not into being disrespected. I'm also scared of him and not sure anything will get through. I'm pretty close with his girlfriend (I introduced them) but she insists that it's between me and him and won't help me out.

Give me the gist of the text in a nutshell
<bot>: Friend takes almost-daily bad moods out on everyone around him with passive-aggressive bullshit, fucking sick of it, afraid to stand up to him.