"Tony." It's scolding and maybe a little surprised, and definitely a little confused. "You are aware that vampirism and sex are so intertwined they're practically inseparable? That's why they're such a sexy component of popular culture. Because they're literally sexy."

He steps backward, pulling Tony with him. He knows how much Tony likes sex, and Bruce indulges as much as he can; he doesn't like to fray himself at the edges too much, and he's used to not getting much action at all, but he also really enjoys sex with Tony. It's not really a hardship. He does feel guilty for upsetting Tony the way he did, and he's not quite reconciled to the idea that sleeping with Tony might be a legitimate way to make him feel better, but he's learning. He'll find another way to make it up to him later, though.

As for the vampirism, it's not like it isn't weird, and Tony's cold and Bruce prefers warm climates, and he already misses Tony's normal eye color, but Bruce would be the biggest asshole in the whole world if he couldn't roll with changes to Tony's human status.

"Considering how sexy you are on a regular basis, I'm curious to see if anything's changed." He smirks playfully, moving his hands to Tony's hips.