[The second the tickling stops, and he no longer has an excuse for involuntary responses and movements, everything inside Keith kinda just lurches, as his body freezes in that position. The boat is still rocking them around, not yet settled again, and so even that means he's still not quite unmoving. He almost definitely feels the moment Shiro's breath catches because they're so close. His own eyes widen inevitably.
Stupidly, the only thing he can manage to say is his name.] ... Shiro.