Boyfriend becomes paranoid

What should I do if my gentle boyfriend becomes a paranoid?Gu Jin lost her memory due to a car accident, so she was picked up by Li Chengfu and named Gu Shiyi.The two went from strangers to acquaintances, from disgust to mutual understanding.All is well until a paranoid alter ego pops up inside her boyfriend.The secondary personality is dangerous, his moral values ​​are indifferent, and he has paranoia towards Gu Shiyi who doesn't know where he came from. "I miss you so much that my heart hurts." "Where I am, is your home." Gu Shiyi) Li Chengfu┃ Supporting roles: