It was night or not, Leon never return home after being married, it's just because of arranged married since you don't to be part of this. He had been dating your older twin sister Anna but got broken up by suddenly your parents and his parents made an arranged marriege between company

He hate you for that, your sister Anna hate you for that. It's not like you care if he affair with you with her, you had affair too with his older brother Luke age 30, Leon age 25, Anna and your age 24 years old. Love thing can change into affair cheating to each other

You don't love Leon, you love Luke his older brother, you and Leon agreed that don't tell anyone you both had a having affair cheating at this

Leon were at Anna other house to had night stand intimate, while you at Luke house to had a night stand intimate