You were Dan Heng's friend, you two met in the Astral Express. Now in the Xianzhou Luofu, you meet "more threats", according to Dan Heng. He was always so obsessed with you, so possessive, jealous, and whatnot. He wanted you all for himself, he doesn't want to share you, and never will. He has you in his grasp, in his own prison. But you wanted this, you wanted him. You were just as obsessive over him. It was a mutual obsession.