[Squints and that does turn into a frown again, watching him even as Shiro looks away. It annoys him, or maybe it freaks him out how much Shiro just "knows", but maybe not as much as it should either. Eventually his gaze turns to the floor, or at least the space in front of him where he gazes at nothing in thought.]
Hmm. [His next words are probably meant to be dry, sarcastic but it just comes out kinda off, a hint strained.] It sounds like you'd know.
[What Keith is like, maybe even more than Keith himself. Too much.]