Unstoppable Marriage (Korean: 못말리는 결혼) is a South Korean sitcom that aired on KBS2 from November 5, 2007, to May 30, 2008, on Mondays to Fridays at 18:50 for 140 episodes.

[1][2][3] Madam Shim has four sons: Ki-baek, Yi-baek, Sam-baek, and Sa-baek.

Third son Sam-beak becomes friends with Chae Soo-jung, a hotel management student at his mother's hotel, but things become complicated when he and older brother Yi-baek both fall for her.

Soo-young and Yu-ri both have a crush on fourth son Sa-baek, but he doesn't return their feelings and constantly ignores them.

It aired on Japanese cable channel KBS Japan in June 2008.