Good. He can learn. Lucifer may have actually throttled him if he had slipped anything, just to teach him a further lesson, posted guard outside be damned.

He glances away from Istredd to the window, the last of the frost melting away.

He almost tells Istredd that being so close to the two of them will no doubt get him burned one day. He doesn't. Istredd likely already knows, if he's been around Yennefer for as long as he has. Add Lucifer to the mix, well. There's a wildfire.

But he does bristle at being called defensive, like it makes him even more defensive. He sniffs, shaking it off. "Truly, it's a wonder you tolerate me." Is his self-loathing showing? Ha, ha, ha, hilarious.