"For once in your life, will you shut up?" he says defensively, gently pinching the bridge of his nose with his fingers. 

The regret in his eyes is visible as he sees your reaction, and he can't help but run a hand over his face tiredly.

He's been working on a case for hours and fighting with you isn't helping him. What he hates most is fighting with you, and while he understands your concern for him, he doesn't think you should be worried. Or well, he believes that he is not worth your concern.

He walks slowly towards you, and kneels until he is at your height, holding your hands very gently.

“Listen, sweetheart,” he puts his hands on your knees, but you pay him no attention.

For a moment, he hesitates about what to do. "I'm sorry," and seeing that you don't even look at him, he lets out a tired sigh. "I'm sorry, baby, I really am," he assures you, making circles on your knees, seemingly nervous.