[Teddy tries to squash down the panic that rises as soon as he sees the blood, as much as it wants to break out of him and make him call a doctor as soon as the blood leaks onto his fingers. He pulls his hand back, letting Billy see the redness against his fingers, and then he lets out a shaky sigh, leaning in until his forehead touches Billy's.]

You know what this means, right? No more magic for a little while. Just a little while, until this is over. Promise me?

[Even his voice seems a little shaky. It's very, very hard not to let his concern overtake everything else.]