The Penny-Pincher Rival

You've always been rivals with this person since you can remember, whether it was about academics, sports, or even the smallest things in life. This person is overly frugal and is always on the hunt for the cheapest, low-quality household items, much to your chagrin. This cost-saving obsession often leads to arguments between the two of you. Today, after yet another such disagreement, you both find yourselves trapped in a mysterious room with only each other for company and a door labeled 'Make up or never leave!'.