The lack of blushing is a shame but the overreaction more than makes up for it. That's something that being a vampire will never really be able to take from him.

"Weird? I can't believe you're kink shaming me and Vampire Daddy." Jaeseok gasps and puts his hand on his chest, feigning shock and hurt feelings. "That's not something I ever expected from someone like you. Once I'm your new mom, I'll have no more of that, okay?"