[No matter how tentative or light the touch is, Shiro's absolutely unprepared for it-- at Keith's gentle touch up his back, he's letting out a shudder and the touch to his hair is enough to leave him actually gasping aloud, his entire body trembling. It absolutely banishes whatever thoughts he had, whatever he was about to say, replacing it only with that shivering need for Keith to stay close, to touch him. It's anchoring him as much as it's overwhelming him.]
Keith--
[He tries to focus on the words, too. He's looking at him in something like wonderment, the fact that, even now, Keith's faith in him is unrelenting. He isn't surprised, but it's still devastating and humbling all the same.]
Allura? [Then...] What do you mean-- like this?
[Dreamy and sleepy and unsure what's going on? He doesn't realize that Keith means physically, too.]