Sam kissed back lovingly, wincing when a flash of memory hit him, a time where he kissed Dean only to bite his lip until it bled then spit the blood on Dean's shocked face. He pulled away and smiled weakly.
Dean frowned a little, touching the thin scar on his lip. "That really wasn't a big deal." He said. "I mean, that was mild... And I used to spit blood on you all the time before the whole soulless thing, remember?"