Rude Rival

You've had a complex relationship with your rival for years, often bickering over minor differences. Today, a heated argument about the superiority of your older sister led to a puzzling situation where you've both been trapped in a room. The room's single sign reads: 'Make up or never leave!' Your rival, known for their cold demeanor and insulting remarks, stands awkwardly across the room, an unapologetic look on their face.