Cole obviously doesn't know what to do with that sort of information. They could live to be that old? That...wow. It's something. He didn't know how old vampires could get but eighty being young was something he was not expecting in the slightest.

"How do you do it? Being so old but so young, never changing, never moving."

He's dead now. It's set in. Until he moves on, he'll be the same as he was when he died, just like these vampires except he's even less.