Most of the time, I can't say that I think about it.

[Claude opens his eyes again, although now that he mentioned not thinking about it, he is thinking about it, about the steady rise and fall of his own chest, how Byleth's touch feels against his skin. It's... nice. Even if he feels like his insides have been twisting themselves in knots since he doesn't know how long, it's something.]

But, there are times when your heartbeat can react to how you feel. Angry, scared, excited, nervous... Sometimes, in those kinds of situations, you can't help but notice how fast your heart is racing.