I had a roommate when I first moved out of the house. We had seperate bedrooms (thank god
) but the walls were super thin. It's really hard to try get your mood on when you can hear the ol' roommate snickering in the living room.
When we figured out this wasn't working, we started hanging a towel outside on the balcony (We lived on the second floor) that way he could drive up and see it from the street.