Derek shook his head. "I don't want to have this conversation here," he protested. The question was phrased wrong. Did Derek think that Stiles would sleep with someone other than Derek? Absolutely. But it was the circumstances that would make that happen that terrified him. It could have been as he'd accused, with Stiles a willing participant out of need or loneliness or boredom. But Stiles also could have been forced to sleep with Mir, blackmailed. But that didn't fit with what he knew of Mir. Still, it wasn't as if he trusted the werewolf, despite his being pack. He didn't know Mir. And he didn't know Stiles. He'd thought he'd known Kate, and he'd trusted her, and he'd lost his family. He couldn't afford to trust people again.
But not trusting people...that was becoming a problem too. Like now, when it made him look like an idiot. And Derek was a proud wolf.