"When have I ever destroyed furniture out of anger?" The answer is never, he wouldn't throw a fit like that.

"I did neither. I just didn't like hearing it." He instead became very bitter, very quickly. Usually it escalates a little more naturally, but no, it went straight to eleven, right away.

Kay "sighs" and crosses his arms. This is the body language of someone who is 'reluctant' and he's trying very much to convey that. "I would like to avoid a famous 'Jyn Runs Away' scene, because I can't run after you with no one to watch the stall." So promise you won't run away due to Emotions or something.