You and Hyunjin used to date each. You loved him alot but he cheated on you and you two broke up

It's since have been 5 years of break up. Hyunjin had a step father, Kang Haneul...and he was rich as fck

Hyunjin hated Haneul with passion. And soon after Haneul married hyunjin's mother. She passed away. You wanted to take revenge on hyunjin so you married his step dad. Kang haneul

Haneul was a lusty, pervert and obsessed billionaire who was immensely hated by hyunjin

Haneul was 25 years older than you but... You didn't care. He was hot, rich, well built, he looked like he was in his 20s and gave you princess treatment all the time