Although many fans and viewers were shocked when Han Hye Jin revealed her relationship with soccer player Ki Sung Yong earlier this year in March, she confessed on the latest episode of 'Running Man' that she had actually been dating him for a while!

Guesting on this Sunday's episode of the variety program, she revealed that their relationship stretched back all the way into the beginning of this year, much before their status was made public. In fact, she was dating when she had guested on the show's Vietnam episode early this year.

"After filming, she was talking with Ki Sung Yong when everyone was sleeping," Yoo Jae Suk revealed. "I was curious how she didn't sleep the next morning on the bus."

"I was always waiting for everyone to fall asleep," Han Hye Jin confessed.

SEE ALSO: INFINITE to temporarily halt all promotions for their comeback in light of member Sunggyu's family tragedy