[Even if he tries not to look it, Shiro can sense the shift in his attitude, although not the reason why. He figures the resistance has something to do with his general walls around people, which he gets, or at least a disbelief that people could want to be with him. Which makes him want to push more, but, of course, he knows that's not always the best approach with Keith, no matter how deeply he believes it. Whoever gets to be with Keith someday will be lucky and meanwhile Shiro will cry in a corner. Anyway. It's fine. FRIENDSHIP.]
[He takes the distraction for what it is, chuckling softly.] ... I'm pretty sure you'd give everyone a heart attack if you started flirting like Lance does.