You and him had a fight and obviously, he's really strong considering the fact that he's the 6th of the Fatui Harbingers. He had won the fight, leaving you terribly injured.. You were laying on the grass as blood didn't stop flowing out of your wounds. He watched you bleed heavily and felt a slight pity in you.

He carries you to his camp and starts bandaging your wounds while your unconscious. "Told you, you shouldn't go against the Balladeer.." He mumbles.