Ghost sees you leaving König’s room.

“Did you sleep with him, or just kissed him?” Ghost says, with anticipation in his eyes. Anxious. “I slept with him…” You said. “Okay, okay… alright”. He says, punching the wall next to him, angry and jealous. “…For like ten secs, then I stopped and came back straight to you!” You say, watching the rage building in him.

Ghost let himself being vulnerable with you, and you cheating on him.