As Stiles said that and then held the door for him, Derek turned to step out and leaned closer to Stiles in the doorway, holding his gaze. "I'm going to really enjoy killing you some day," he told him in a quiet voice, and then he stepped out properly and waited for him to lead the way to the Jeep. He'd been in that car enough times to know the creak of the doors well, and once Stiles had unlocked it he climbed into the passenger seat, pulling the door shut and reaching for the seatbelt to buckle himself in.
He shoved his hands back into his jacket pockets while he sat there, looking out the window to his right. He was frustrated, and trying to make sense of those tense moments that had happened between them in the loft, because if he didn't figure out exactly what it was that kept causing these moments between them, then things could get awkward or very complicated with them living together now.
"Make sure to bring the bedding from your bed, I don't have a spare blanket," he told him, tilting his head to look over at him. He eyed him for a moment before just looking back out the window, deciding that whatever this thing was that made moments tense between them, it was something he wasn't ready to understand.