There's a few moments of silence as Hunk takes in what this guy says. He's an anxious wreck? Who's the one sitting here crying? Hunk owns his anxiety, but this? It makes him just start laughing.

"Could've fooled me!" But the laughter subsides after a moment, and the big guy just sighs. "What, uh... what're you anxious about?"

Hunk figures if this blond guy's gonna go out of his way to try and help him out, it'd be a crime if he didn't extend the same courtesy. Plus, if he stops thinking about his problems, he might calm down.