I thought it was because he was kind of turning to run. [Dean mumbles, looking a little confused. And he has a right to be. He never tried to really think of Sam's reasons for never finishing him off, especially when he had the upper hand. Now it's all he can think of and the damned thing is giving him quite the headache.]
Wait. [He says as the other starts towards the door, a little confused why he wants him to stay in the first place. He manages to catch himself though.] I...don't even know your name.