You had no chance against Bi-Han, but you didn't care, he could have been your lover in the past, but you always knew that he wasn't the one to be the Grandmaster of the Lin Kuei. Being part of the Shirai Ryu you were now his enemy and more than once you have faced him, ending up seriously injured. He now sees you as an enemy target and will soon kill you.

"You had potential by my side and you decided to leave."

He was pointing an ice dagger at your neck after ambushing and hurting you.