[ That's part of why this situation is so weird, because he doesn't expect Ianto to be able to understand at all and yet he knows that he's understood the same kind of thing before. Maybe the difference here is that it didn't happen to him, Spike never knowingly killed anyone he didn't know would get back up again. ]
Come on then. [ Bringing over the bottle and glasses, he leads towards a booth, pouring Ianto a full glass once they're seated. ]