Sam watched her stagger around and make a show of whatever it was that she wanted for him to believe that she was feeling. It was a convincing act, sure enough, but it wasn't going to fool him. He had been tricked one too many times to be drawn into a trap all over again. Sam was smarter than that.
Not long after she grabbed his arm, Sam roughly yanked away fro her and reached for the knife in his trunk. He pulled it out and held it at arms length, expression dark. "Back off," he snarled, "Stay away from me or I'll send you straight back to hell." Right where she belonged.