@Miskah
Spoiler!
Ah, them falling for each other is debatable, in my opinion. Zhenya definitely fell for Taekjoo, but idk if Taekjoo fell for Zhenya. Taekjoo says he doesn't know if his feelings are from Stockholm syndrome or if he pities the lonely life that Zhenya lives. He also says he was just waiting around until Zhenya gets bored of him. But at the end he realizes that he never imagined his and Zhenya's relationship ending and he doesn't want to be without him. Idk. Taekjoo is never really clear about his feelings.