@Jay "And despite Haegu’s verbal denials, that is what the narrative is telling us happened given the juxtaposition of Mian’s idle thoughts and Haegu’s own reflection on how long Mian’s been appearing in her dreams.". This is a more delicate subject to discuss and the story doesn't delve into that in later chapters, but assuming she really had those dreams, do have in mind that dreams don't necessarily reflect real feelings and desires. All we know is that Haegu's dreams are a consequence of what happened 5 years ago. We need to take into consideration how much of shocking experience it was for her: to have a person she saw grow up and that was supposed to hate her, actually feel attracted to her (a teenager, no less). What happened back then was something that completely changed how she saw Mian, and that may have had an effect on her dreams. But again, that doesn't necessarily mean attraction from her part.