Being best buds with someone is not the same as living with them.
When I was young I lived in a commune with about 4 of my friends. Was awesome and really kark at the same time.
You always get that one guy that is wired differently to everyone else. The guy that thinks its ok to put his entire plate of half eaten tuna rice in the fridge for later.
The guy that wakes up a little earlier than everyone else and has a massive crap in the bathroom just before everyone has to do their morning routine.
The guy that boils his eggs inside the kettle and spreads his wet jocks on the dish rack to dry.
The guy that makes loud sex noises from his bedroom when your parents come to visit.
Yes I was that guy
