There's this episode of criminal minds that show a psychopath that Falls in love with his ...

There's this episode of criminal minds that show a psychopath that Falls in love with his first victim. He's also a serial killer but doesn't kill her because he claims he loves her even though a psychopath is incapable of love. Later on the audience finds out that he didn't really love her he only thought of her as a substitute for his mom. And that's what I think is going on with sangwoo in regards to bum. A lot of ppl truly think sangwoo is in love with bum. The author has been pretty true to how a serial killer is like and I think that's the idea she's trying to get across.