[Pulls back a bit to raise an eyebrow] You're kidding right? What if he's fighting a perfectly symmetrical what-have-you? Does he just... Give up and go home? [He rolls his eyes before laying his head back down]

Well, the fact of the matter is, you're just as much mine as I am yours. [He runs his tongue along Stein's jawline, ending with a gentle bite at his earlobe] And I really don't like it when people start touching my things.