Love Junkie

Right after graduating high school, Yewon falls headfirst into an affair with the charming but married Han Ju-eon. She knows it's wrong, but she doesn't care. She's in love. Things start to spiral when their classmate Jeong Hwa-ik catches them in the act and makes her an offer of his own. Whether out of spite, curiosity, or something darker, she agrees. "Even if I sleep with someone else, you're not going to leave your wife, are you?" (Source: Lezhin)