i'm LOVING this but why was she like so undecided about if she liked him and made him wait...

i'm LOVING this but why was she like so undecided about if she liked him and made him wait a whole week but told him she liked him just after the fight with her ex? i feel like she would've made jeongho wait even more, if only she made it clear she would've told him her feelings that same day. It looked like she only noticed how she felt about him after the fight and i'm so fed up of those situations in romance mangas fr