Even better. That would be an excellent task for the reader to discern. It would show initiative if they figured it out early, and spark a lot of theorizing. Ambiguity is a good tool for such things.

[ He's quite happy to be talking about fiction. Very happy. That's his thing, and he loves it. Dearly. He might not have written anything recently, but he loves his creations with all his heart. ]

Plus the intrigue of concern over developing friendships tearing people apart, as some get angry about the obvious traitor in their midst, and others get too attached and defend them... well. It would make for some very good drama.