"Because--" He cut himself off, staring at Derek with an open mouth as he fished for a reason in his mind as to why he'd come all the way over here. Why he'd hunted him down and tracked him to this crappy motel and why he'd decided that driving here was a good idea.

Why he cared.

"Shut up. I ask the questions." Push.

Yes, because that was how things worked, Stiles.