[ It's a pity, Astarion thinks faintly, that their paths cross each other rather than running parallel, at least for the moment; it robs him of the ability to go back to camp and immediately ask Karlach if he's correct in thinking that Rand's behavior is deranged, or at least deranged-adjacent, consult with Wyll as to whether or not this really is acceptable normal behavior, and generally gossip with people who have about a good a handle on the subject's behavior as he does. But, alas, Rand has yet to meet the little band of misfits he's been traveling with, and so he has no frame of reference to consult but his own.

As such, his expression goes from dubious at that no, you won't (confident!), to even more dubious at what follows, his brow wrinkling and his mouth pressing into a line that attempts to convey that the notion of laughing didn't even cross his mind once. But, really, it's a case of protesting too loudly — he's grown fond, for better or worse, and the fact that he isn't immediately acquiescing to anything and everything is proof enough of that. ]

If I find out it's an offer you've extended to anyone else, I shall be extremely cross with you, [ is what he settles on as a response, spoken lightly enough to make it clear that he knows Rand isn't exactly encountering vampires left and right. Other sorts of danger, surely, but— well, he wouldn't have been as curious as he was if Astarion's condition were a common one, would he?

Speaking of which— ]

Well, now that we've gotten the big one out of the way — did you have any other questions for me? You won't have a better opportunity to ask whatever else you'd like about vampirism, I can guarantee you that.