What Happened Between Song Joong-ki and Park Bo-gum? A Story of Friendship, Tears, and Growing Distance Once considered South Korea’s favorite K-drama duo, Song Joong-ki and Park Bo-gum shared a bond that fans believed was unbreakable. From heartfelt award speeches to charming joint ad campaigns, their friendship felt sincere and admirable — a true off-screen brotherhood. Both stars were signed under Blossom Entertainment, with Joong-ki often taking on a mentor role for the younger Bo-gum. In a touching moment at the 2017 KBS Drama Awards, Bo-gum, tearful while accepting his award for Moonlight Drawn by Clouds, thanked Joong-ki for his constant support. His gratitude moved Joong-ki to tears, who later reflected that Bo-gum’s struggles reminded him of his own early days in the industry.