He liked her long b4 the divorce one of the women he was sleeping with told him that she’d better understand his feelings if they were no longer in a contractual relationship so he asked for a divorce
Dad liked her since the 1st time but he and the fl had a misunderstanding because of the son. Which is why the dad kept sleeping with other women in front of fl, bc the dad thought that's what she liked. He realized that she actually wasn't interested in watching him sleep with other women after the divorce that's why he confessed to fl.
This is literally said in the manhwa so idk bow you missed this
It's probably because of the translation. If someone isn't use to the messy way the lines were said, they're bound to misunderstand/miss some information.
I don't agree with OP though, I liked Dan more lmao
I honestly prefer her with the son. The dad is annoying and a pos. He suddenly like her after divorcing her