A dry laugh because yes, well, that answer is actually a bit less cynical than his own, and that almost surprises him because Vrenille doesn't think of himself as a cynic. He's not sharing the inner workings with Ed though, so it's convenient that there's this bounce towards flirtation.

Convenient and also interesting. He runs his tongue over the flat of his molars. He's not necessarily down for pain (or for teeth) except with people he trusts pretty well or in particular circumstances, but he's always curious to see where a bit of flirting goes.

"So that's what you're into, huh? And maybe not quite the way that line they'v drawn on you'd make it seem?" Because the way he's just said it doesn't sound especially submissive to Vrenille.