It's beautiful and terrifying. To Loki knowledge was power, and that glint in his eyes when he was in pursuit of it…it sent a thrill through him. He wanted to watch, to work out in his own mind how Loki's mind worked. At the same time he also wanted to pull the god away from whatever held his interest, kiss him deeply, and just be dominated by him the rest of the night.

He made a habit of sneaking into Tony's lab, not that his mortal ever minded. Here he was surrounded by his lover's creations, by his genius, by all the reasons he wanted this man. He was patient. He could be content wait and watch while Tony worked. But sometimes he snuck up behind Tony, ran his hands up the inventor's sides to hear that wonderful little gasp, wrap his arms around the mortal, and just hold on tightly while whispering how much Tony's knowledge fascinated him.