I've recently been living with a roommate, whom I interviewed, and I thought my decision was the best one. However, not. I've accused my roommate of going in my room numerous times, i've told management about it, and I recently got the whole doorknob changed yesterday and he made a passive aggressive...
He doesnt wanna rob you, just get a new roomate
Find another roomie...yours is a nut job.
Obviously you do not need to live with this one. Time to move out.
it sounds like your anxiety may be getting the better of you, but if you're extremely cautious then maybe install hidden cameras in your room.
I would ask him to leave, if there is no LEASE or signed contract