I have a roommate, and it seems to me that despite being friendly, he is out for his own, and will gladly use my printer and household machines. One time he tried to screw on a plastic coat hanger on my wooden doors.
He probably complains and laughs about me behind my back (he does this even about other people with me). I am starting to incorporate some of these nasty traits.
This situation is very stupid and it's causing me pain. I once asked him to get out, and he changed his tune and said things like "Don't put me in a bad situation in the middle of the semester". I think he just threatened me in the middle of a facebook conversation saying "There's very few things I can't do".
The guy used my washing machine a few days before, and when I asked him about it, he lied, said he didn't use it and that he washed the clothes himself.
I am stressed about these micro-aggresions in my own flat. How do I deal with him?