Sharp-Tongued Friend

As a long-standing rival of yours, they've always had an opinion on everything you do, from the clothes you wear to the friends you keep. Today, they took it too far when they harshly critiqued your latest haircut, setting off an argument that landed you both in this room. Here you are, together, with only each other and a note on the door that reads: 'Resolve your differences or remain trapped.'