Derek did roll his eyes then, and nudged Stiles towards the door on his way out. He didn't head back to his bedroom right away, but instead headed downstairs to the kitchens to prepare a tray for when Isaac woke up. As he moved through the house, he kept his ears open, focusing on Isaac and Stiles' heartbeats, and let their steady pulse soothe his wounded pride. He'd thought he'd lost both his slaves this morning, only to discover that their infidelity had drawn them back to Derek stronger than ever.