You, me and…? Love triangle begins

Best Mistake – Season 1

Ju Ho tells Yeon Doo that he saw her green backpack yesterday at a bar. And he tells her what he was doing there but also asks her not to tell anyone. After Yeon Doo promises not to tell anyone, they become closer. The next day, Hyun Ho helps Yeon Doo not to get penalty points. As Yeon Doo put bread on Hyun Ho's desk, she complains about Hyun Ho to Ju Ho.