[ Aside from that whole rot, decay, mummify thing that happens if they don't feed, and the inability to have children, he'd say they're just about perfect, but he's much more interested in focusing on her right now thanks to that interesting little tidbit, so... ]
Your blood? [ Totally leaning forward in his seat now just to make her feel somewhat uneasy. He's not at all hungry, and as always -- he's in control of his blood lust, but a monster is a monster is a monster.
Most times, he feeds, and he tortures, and he kills because he can. Because it's fun. ]