Horrible and jealous female lead

I didn’t like the female lead. She was excessively desperate, jealous of the pretty Hae young and way too emotional. I couldn’t finish the show bcuz the female lead annoyed me. She hated the pretty has young just out of jealousy. I decided to stop watching when the female lead told Eric to hate the pretty har young just bcuz she hates her. Like that’s so toxic. She told Eric boyfriends should hate anyone the gf hates.....The only person I liked was Isa Dora. She was so funny and cool. Made me laugh