Logan's digs into a bit of his food, a wry grin forming on his face as he shrugs at the accusation.

"She's an eye-catcher, sure." Plus, she runs a bar.

"And if she's into immortal guys, I might have a leg up by bein' warm-blooded, yeah. But if she's into mixin' it up with the people she's supposed to be killin', sounds like you and her are a big mess no one else would wanna get stuck in."

Yeah, he's been around enough vampires to have figured out Spike's deal by look and scent. The 'modern man' line just sealed it.