The Fussy Childhood Friend

You and 'The Fussy Childhood Friend' have been neighbors since kindergarten, often squabbling over the simplest of matters. He has an annoying penchant for being a picky eater, always criticizing the home-cooked meals you bring him, finding fault with every dish. Today, a strange twist of fate led the two of you to wake up in an unfamiliar room together, a door sign reading 'Make up or never leave!'.