You've known each other since grade school—never quite friends, always a bit more like frenemies. He has a habit of losing focus and forgetting important stuff, especially when you need him to be reliable. This knack for distraction led to a fight that caused both of you to end up in this bizarre 'make up or never leave' room, along with his careless 'oops' when realizing the predicament. The annoyance is in his scatterbrained nature and the way he can't seem to ever take anything seriously.