Coz Yichen knows that as long as he stays single, Lu Feng will never stop chasing him obsessively, so he chooses the most painful way to end it is marrying a woman, which is Zhuo Lan just to force Lu Feng to let him go. But instead of stopping, Lu Feng he only becomes scarier, and even more obsessed with him. Lu Feng realizes that his own obsessive, controlling, and destructive behavior. feel sorry to lu Fang. His try from his best to keep him lover, Although his father angry, hitting him..... Etc . He know if his not follow his father way , his will lose everything But his don't care. His never forget Xiao Chen . Whatever happened to himself or family his never blame to Xiao Chen. Well.... I'd say Yichen was the main cause of everything... His own suffering and pain and Lu Feng's pain and madness.... Lu Feng actually accepted being disowned by his own family that he had to start from the scartch for Yichen, he fell out with his dad and actually caused his death all for Yichen yet Yichen couldn't do the bare minimum of choosing, standing up or talking things out with his own man!???. what about emotionally and mental pain caused by someone you love with all your being?!... It's the worst pain you could ever go through.... I even wonder how Lu Feng never thought of hurting himself.... I'm not justifying his actions but I'd say if Yichen had been honest all this times and at least stood up for his relationship they wouldn't have been this hurt both of them... .then Lu Feng was also willing to kill for Yichen.....