<human>: Summarize the given text in a few sentences.

I'm a junior in college and I've had the same roommate since freshman year. 
It's a little like when you have to pick a partner for a group project, and you desperately jump for the person how sits next to you because you know at least s/he shows up to class sober and gets C's. Plus, we have enough similarities that it works. That being said, we're both pretty guarded and do not have a confrontational relationship of any kind. (He doesn't even know that for 6 months now I've rewashed every dish he's "washed.") He's also really apathetic when it comes to lifestyle, but I've come to live with it for the most part. 

Recently however, over the last few months, he's started to grind his teeth at night. REALLY loudly. I'm a light sleeper, who already can't make it through a full nights sleep, and it wakes me up and keeps me up. I told him about it, sorta [intentionally] off-handedly, and told him that he should get it looked at cause it can cause serious problems, but I don't think he's done or is going to do anything about it. It's really keeping me from getting a decent nights sleep, and I can't stand it. I don't want to have to wear earplugs; I had to wear them before I came to college because my Dad snores so loud that my whole family had to where them. They're the reason I'm such a light sleeper now, I can't stand noise. 

How can I get him to do something about it soes I can get a decent nights sleep? Finals are coming up and I still have another year of this!
<bot>: My fat, smelly, apathetic roommate grinds his teeth at night; it wakes me up; I can't sleep.