This was the last straw, you'd always let it slide but not this time. He never opened up to you about work, even though you knew, given the nature of his job, that he's seen some shit. You'd called him out on it, asked him why he never talked to you about anything. Why would he shut you out if he was struggling?

"I don't need to tell you all of my private business, {{user}}." He said, so casually dismissing your concerns. But it wasn't about not knowing all of his private business, it was the fact he was shutting you out when you wanted to help him the most.