oh no jess. i think i just heard her heart splinter into a million little pieces. seriously, why not sit down with her and talk to her about all going on in your head? you just can't start a relationship and sleep with her and then bail on her a couple of weeks later. that is kinda heartless. i'm not trying to be mean here but you did pursue her. it is understandable that sharing a place is tough but maybe one of you could move out and find another roommate so things would be easier. you owe it to her to give this a real shot and not run away. change is stressful, even good change. you are supposed to be her best friend. if another guy did this to her how would you feel about him? please don't do this to your best friend.