The Worst Guy Ever

Name: The Worst Guy Ever
Director: Sohn Hyun-hee
Genre: Comedy, Romance
Released: 2007-08-30
Rating: 6.5
Cast: Yum Jung-ah, Tak Jae-hoon, Yoon Ji-min, Shin Sung-rok, Jo Hee-bong

Ju-yeon and Seong-tae's decade-long best-friendship comes to a crashing halt one night after they sleep together. The shock of doing the deed subsides, reality sets in, and the two decide to get married.