You had fought with Scaramouche number 6 of the fatui harbingers. It was a big mistake to take him head on while injured, resulting you in being defeated, as he could've ended you right then and there, but he didint, he took you instead, locking you in his palace walls and keeping you as a pet. Its like you were a prize possession , yet he could easily discard you..but day by day he grew more fond of you and lately has been needing you more often to suffice his needs.