My Boyfriend Is Type B

My Boyfriend is Type B is a South Korean romantic comedy film from the year 2005. The basic premise of the film comes from the Japanese blood type theory of personality, which claims that a person's blood type can determine their personality traits. The heroine is type A (conservative and introverted) while her love interest is type B (passionate and irresponsible).

Directed by Choi Seok-won, My Boyfriend Is Type B leans on a strong ensemble — Han Ji-hye, Lee Dong-gun, Jung Ryeo-won — to carry a story that balances spectacle with character.

The film landed with audiences for its craft and performances, and remains one of the most talked-about comedy titles of 2005.