This is not stockholm.
Bum was "in love" with Sangwoo before being kidnapped.
The words "stockholm syndrome" appeared in the first chapter.
Even if not, Bum is too impulsive, like when he just entered Sangwoo's house ou justified his actions "because of love"
and stopped loving him, but wasn't allowed to leave so whats your point?
Actually the words in the first chapter were "Borderline Personality disorder"
awe theyre so cute i almost forgot about the stockholm syndrome lol