Marriage Is a Crazy Thing is a 2002 South Korean erotic romance film starrinh Kam Woo-sung and Uhm Jung-hwa.

[2][3] Joon-young (Kam Woo-sung) is a Korean professor of English literature and a perpetual bachelor.

But when he meets Yeon-hee (Uhm Jung-hwa) on a blind date, his days of bachelorhood seem numbered.

But because of the views both of them have on marriage, she marries someone else and the professor becomes her kept man, living with her only on weekends.

But even this limited relationship brings up the conflicts that result in fights and jealousy.