Two Weddings and a Funeral (2012)

Du Bunui Gyulhonsikgwa Han Bunui Jangryesik (original title)

To keep their sexual orientation a secret, a gay man and a lesbian woman gets married. Now they have to juggle their identities to fool parents and co-workers, all while trying to find real love.

Director: Jho Kwang-soo Kim (as Jho Gwang-soo Kim)

Writers: Yoon-sin Kim, Hae-yeong Park

Stars: Dong Yoon Kim, Hyeon-kyeong Ryu, Seung-do Han

Love's Lone Flower (2005)

Original Title: Gu Lian Hua 

A woman's lesbian feeling towards two different female singers - one in Shanghai during late 1940s and another in Taiwan during late 1950s.

Source: Here