"I can tell you why," he admitted, looking down. It was something he could understand. "He's all the family he has," he said, looking up at Stiles. "And as much of a jerk as he is, and trust me, I don't trust him any further than I can throw him, I know why Derek doesn't do it."

He sighed, shoulder slumping. "He's family and when you've lost everyone else, you cling to what you can."