"Confused." Derek clarified. He closed the distance between them to stand next to Stiles and angled his body to face him, exhaling a breath. "I'm not mad at you," he said. "I'm frustrated with the way things are between you and Allison," he admitted. "I know that it's strange for you, to think of...sharing me with a friend, I guess. I know you were jealous of Isaac, even though Isaac was my slave before you were. And now you seem to be jealous of Allison, or at the very least resentful, thinking that she's stolen me from you--and I know. I know you say you understand that it's not like that now, and that you're 'okay' with it. But you spend less time with her now that she's next door than you did when she was hiding in the garage."