Sedaka wrote:
K... So I have this roommate who thinks he's in love with me.......
Disclaimer: I can only theorize, because I have never been pursued so fervently, and all any woman ever needed to say to get rid of me was to tell that this is what she wanted. For anything beyond that, I have to make guesses based on what I have read.
After the disclaimer, the theory. I read that one way in which many people quite committed to a relationship test their partner's commitment is by flirting with someone else. If the partner is committed, he/she will respond with jealousy (I don't know whether that testing is even a conscious strategy). The normal wiring of the human brain says that if there is no jealousy, there is no commitment on the part of the one who witnesses the flirting.
My suggestion is that you might use this principle for the opposite purpose, by being extremely pleased for your roommate whenever he is trying to make you jealous by mentioning other girls. If you want to take it a step further and if you have common acquaintances, you could suggest to some of them that your roommate is looking for a girlfriend, and could they set him up with a blind date? Even if they don't, their mentioning it to your roommate should show that you want him with someone else, and perhaps that will get through to his subconscious.
I see two risks to this strategy. One is that the blind date thing could offend him if he thinks it makes him look like a wimp. The other is that if he is not after a long term relationship but after easy sex, he would be pleased at lack of jealousy. This only has a chance of working if you know he is after something long term.
Sedaka wrote:
he's going thorugh my room and taking stuff and doing all sorts of other disrespectful things
If it was me, I would start to find that creepy. And reasoning on the principle that there is absolutely nothing too stupid to be believed, some of the rapists who excuse themselves by saying "but she wanted it" probably do believe that. The combination of wilful ignorance and wishful thinking can compete with outright evil on equal terms. When he goes through your room he behaves as if you were much closer than you really are. Do you think he believes that? If this guy is in the process of persuading himself that he is halfway to where he wants to be and just has to try harder to succeed, you could be in trouble. And if that is so, then the last few days before you leave will be the most risky. I suggest you tell him a date for your leaving several days after when you really want to leave.
I hope I am being needlessly alarmist. The risk assessment is again based on theory.
Gromit