Azaleas (2012)

Tae-Hyeon is a guy that does what he wants, when he wants. Although he is happily engaged to Sujin, he soon finds himself in another relationship with a younger woman, Chae-Lin. It's not long until Sujin realizes what Tae-Hyeon is up to. That is when she decides to leave him. However, Tae-Hyeon also decides to breakup with Chae-Lin. Now he is all by himself.