He didn't smile, despite how cute that reaction was, because he hadn't been lying. Trying to hold himself back was miserable and driving him crazy. The tone gave him some hope, though.

"Yeah. If that wasn't already made painfully obvious. And there's no point to try to hide it anymore, so--" He didn't flinch, but his words did halt as the device took the blood sample from his neck.

"So if that's something you want to do, too, you'd better tell me."