Nothing Serious
연애 빠진 로맨스 (original)
Starring Jeon Jong-seo, Son Suk-ku, Gong Min-jeung, Kim Seul-ki, Bae Yoo-ram, Kim Jae-hwa, Im Sung-jae, Lim Sun-woo, Kim Young-ok, Kim Kwang-kyu
It's a drama and comedy movie, and has a rating of 6.5 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from United States.