Make sure you guys set some rules or just an understanding about bills, groceries and if your sharing all the responsibilities. The biggest problem that always comes up is, eating someone else'* food and not cleaning up after your self. Get that figured out and you'll have a damn good time.

that'* the exact problem i have with my roomy... he'* a huge SLOB, doesn't clean up anything at all, and he eats all my food.... (hasn't chipped in a THING in the two months we've been living together... argh)