YG Entertainment model/actors Nam Joo Hyuk and Lee Sung Kyung both stars in the MBC drama, “Weightlifting Fairy Kim Bok Joo“.

The staff of the drama posted a behind-the-scene video of both stars captioned as “Lee Sung Kyung’s kisses get Nam Joo Hyuk running”.

Nam Joo Hyuk and Lee Sung Kyung in “Weightlifting Fairy Kim Bok Joo”

They were told to place an adlib in one of the scenes they shoot to improvise, where both brought out their comedic sides, even kicking each other and just plainly having fun on the set.

Nam Joo Hyuk then asked Lee Sung Kyung to kiss him instead of the kicks. The latter then cupped his cheeks and kissed him with no hints of hesitation.

The scene was captured in a video and uploaded online.

Sung Kyung’s kisses would have made Nam Joo Hyuk running. They also have a scene where both threw hearts at each other.

The drama is set to end on January 11.