Yes! He's done it - his own façade starts to crumble at first to give way to satisfaction at his success, seeing the frustration on Astarion's face. But then as Allumin begins to laugh, so too does the other man, and his smile becomes a bit bewildered.

He was not expecting this.

"I was clever enough to fool you," he says with at least a kernel of pride. "You ought to be careful, I might do it again."