I think it's because of the leads' natural chemistry and how believable they were as a couple really makes them…
I agree! & most of the time the story of married couples are much more interesting since we see what problems they faced after the "happily ever after"
I really wanted to love this but something about a FL whose only focus in life is the ML doesn’t do it for me :/ I enjoyed the sibling relationship though that was quite accurate lol. Dropped after ep 5