I've only really had one roommate (besides my wife), that was in my first year at college. He was friendly enough, but I could never get past that he treated his girlfriend very poorly. She went to a different college, and he cheated on her constantly. She visited a few times and was the nicest thing you'd ever want to meet. It was heartbreaking, but I knew it wasn't my place to bring it up, and she never asked.
Oh yeah, the phone was in his name, so I'd pay him a few buck every month for what I owed. I always paid in cash. The first month of summer, his mom called my mom and demanded the $180 I never paid in phone bills. I didn't have anything to prove I paid, so I ended up having to fork it over. Funny, my bill was never over $30 since I barely made any long-distance calls.
But there was a happy ending. He joined a fraternity that was heavily into hazing. They demanded so much of his time that he failed out both semesters. He was forced to take a year off, and I don't think he ever came back. Serves him right.
My wife, BTW, is a fantastic