Dean wouldn't blame him a bit if he called it off. In Dean's mind, Sam was still very firmly labeled 'not a food source'. Sam's blood was comforting and, yeah, arousing, but he wasn't a midnight snack and he wouldn't blame his brother a bit for refusing to allow any more bites.

If he'd known how much his impromptu claim bothered Sam, he probably wouldn't allow himself to touch him again. In any way. He hadn't intended to give his brother the idea that he was viewing him as property. Not for real. It had just been the only thing he could think to say that would stop Eric from advancing on Sam anymore.

He nodded and headed out the door. "I'll be back in a little bit. Get some sleep, Sammy."