Singer Sung Si-kyung and UFC fighter Kim Dong-hyun appeared on the latest episode of 'Running Man'.
On the March 22nd episode of SBS' 'Running Man', 'soft guy' Sung Si-kyung and 'tough guy' Kim Dong-hyun appeared as guests to engage in a fierce battle.
On the show, Sung Si-kyung became particularly affectionate towards the show's only woman, Song Ji-hyo.
When Song Ji-hyo was struggling with one of the missions, Sung Si-kyung helped her solve it carefully with one hint at a time, showing off his gentle side.
After watching their sweet interaction as he was walking by, Yoo Jae-suk said, "What's this? Are you two dating? Is it going to be a love triangle with Gary from now on?" causing everyone to laugh.
Sung Si-kyung wittily responded, "Please stay out. Bye."