For mobile users:
Here are the typical sources where Sinhala subtitles for this movie have historically been found: secretly greatly 2013 sinhala sub
Secretly, Greatly (Eunmilhage Wangdaehage) Language: Korean Genre: Action, Comedy, Drama, Thriller Starring: Kim Soo-hyun, Park Ki-woong, Lee Hyun-woo For mobile users: Here are the typical sources