Istredd isn't capable of keeping up banter right then which is why it works better for him that Lucifer is whispering the right things to him. His hands immediately move when they are free, one to dive into Lucifer's hair and hold onto him, the other to his shoulder, digging fingers in.

He tries to kiss him but simply can't maintain it when he's gasping in breaths, sharper and sharper, holding onto Lucifer for dear life. Istredd doesn't break anything in the room but his mind does seem like it builds up into agony before it finally explodes into bliss instead.

His death grip on Lucifer relaxes and he nuzzles into his cold hand on his face. It's a relief, since he seems to be burning in comparison. Hazy blue eyes open again to look at him and he smiles. You'll have to lie for us tomorrow and apologize, I'm not even a little sorry. Smug.