I need immediate social triage advice for a highly volatile ...

Prompt

I need immediate social triage advice for a highly volatile group dynamic. Context: I am going on a 3-day group cabin trip with 5 friends. I recently started secretly dating one of the friends (Person A). However, Person A's ex (Person B) is also on the trip. Person B just found out about me and Person A 2 hours before departure and is furious/feeling betrayed. We leave in 3 hours. The Logistical Nightmare: The sleeping arrangements are already locked in and paid for: - Room 1 (Large Bunk Room): 4 people (Me, Person A, Person B, and Neutral Friend C). - Room 2 (Small Room): 2 people (Friends D and E). I cannot change the cabin bookings, and kicking anyone out will cause a massive group blowup. Tasks: 1. Give me a step-by-step protocol for the 4-hour car ride to de-escalate without making Person B feel ganged up on. 2. Give me a tactical plan for how to handle the sleeping arrangement in Room 1 on Night 1. How do I protect my new relationship with Person A without triggering Person B's abandonment/jealousy issues in a confined space? 3. Tell me exactly what NOT to do (the most common mistakes people make in this specific scenario). Do not give me generic "communicate openly" advice. I need tactical, socially nuanced crowd-control strategies.