She would find a way to mold herself to become the cure he needs for his curse.

Do you want to unfold the part of me that's even darker than the darkness itself?" Lu Xifu asked and Yun Meiyi stared into the eyes that were holding a mix of fear and reluctance. 

"If it means unfolding darkness then too, I am not scared. In fact, after you came, darkness has become my safe haven. It no longer scares me, rather provides me the solace that I never thought I needed." She said and Lu Xifu tried to look into her soul. 

But as always it was difficult for him. He never thought that he would ever praise the darkness. She was born with light to brighten up the Heavens. Her liking for the darkness only evidenced the influence he was making on her life. It made him guilty but he was too selfish to ever think about that. 

He can't let her go, even if it means to bring her into the darkness. After all, darkness wasn't so bad and didn't she say herself that the darkness no longer scares her rather she finds her solace in it?