Actress Kim So Eun has left a heartfelt message after the death of her former 'We Got Married' co-star Song Jae Rim.

On November 14, Kim So Eun shared the photo below on social media along with the message, "My heart is too broken to be described by any words in this world. I hope your long journey isn't lonely," referring to the message about taking a long journey Song Jae Rim updated on his Instagram profile shortly before his passing.

She continued, "Goodbye, my friend. See you again." Kim So Eun also reassured fans, saying, "I've sent him off well. You don't have to worry about me."

Kim So Eun and Song Jae Rim appeared as an onscreen couple on the MBC variety show 'We Got Married' in 2014, gaining much love form viewers. The two actors later reunited in 2016 in the SBS drama 'Our Gap-soon'.

As previously reported, Song Jae Rim was found dead on the afternoon of November 12 KST in his apartment in Seoul's Seongdong District. A 2-page letter was also reportedly found at the scene.

SEE ALSO: Artist company responds to Sulli's older brother's claims that P.O. dated Sulli