Despite Song Ji Hyo's open relationship with another man, the return of the Monday couple is catching a lot of attention.

The 12th broadcast of 'Running Man' was a 'Gary Knows' special.

On this day's broadcast, the members of 'Running Man' were running around to find memory bags of Gary.

What especially catch the attention here was Song Ji Hyo and Gary's love line. The two held hands to find the last key together and Gary sent a hand written letter to Song Ji Hyo.

Of course, the filming of this episode was dated end of January and Song Ji Hyo admitted her relationship in beginning of February. We'll have to wait and see to find out where their love line will lead.

Photo Credit: SBS