Leslie, I am so sorry. But just think, you wont have to deal with the roomies anymore, cuz you'll be living at AB and they always know how to make life interesting!
About the school thing, its called second semesteritis! Everyone gets it so you'll be fine. Your just feeling a lil bumbed so it probably feels like your slacking.
As far as Chris goes I say call him, its best to get things out in the open. In my "clique" from HS, we never told each other how we really felt about the things that weve all done to each other and etc. One night me and me and one of them got into it, and just let everything out and then talked about. Now we're probably closer then ever, closer then the other ones at least.
But its good to know that there are sisters you can depend on. If it makes you feel beter I didnt get an interview to be an LC, life goes on