which drama is this?

Hi, today I remember a very small part of a drama's story but I can't remember which one is,

The drama has 2 timelines Now & Past.in Past we had a family with 2 sisters (I think they are step-sister in now timeline)and one of them was supposed to marry to the prince and another was jealous then she accidently Boiling water poured over her sister's face and the jealous one was married to prince :(

Yes, It's Rooftop Prince.
you right it's hot iron I got a mistake, probably I saw boiling water in another drama :)
thanks a lot.