Charming Rival

You've known each other since school days, and your rival has always been the life of every party, effortlessly charming everyone with his easy smile and smooth talk. He has one annoying habit though - he's utterly unreliable, especially when it comes to taking care of responsibilities, like forgetting to feed your shared pet. Despite this, he's never been one to take your advice seriously, always shrugging off your concerns with a laugh and a flippant remark. Now, you're both trapped in a room marked with a sign 'Make up or never leave!' with no one but each other to rely on.