A fast reminder to anyone with a roommate – set up times where one of you can conveniently be out of the room for the other’s sake.  These are incredibly helpful when significant others are involved.  If an impromptu meeting takes place between you and your girlfriend/boyfriend, work out some kind of “do not enter” symbol with each other; perhaps, the traditional sock on the door?  This lets your roommate know not to walk in as the crotchless panty is being flung through the air.  You’ll both be much better off when these potentially awkward situations are avoided in advance.  Sharing a room is tough – why not make some things easy?