Song Ji Hyo revealed her relationship with the other members of 'Running Man'.

She was a guest on 'Strong Heart', where she said, "I've spent the two years with the members like we were all family, but when we get a female guest, I become a loner. It's not like I get jealous. Instead, I feel like I have to protect them, so I give the guests advice until they can get used to the guys."

Song Ji Hyo confessed, "In the process, oppas don't see me as a girl, and I don't seem them as men. All of a sudden, they change in front of me without any hesitation and when I see that, I start thinking, "What color underwear am I wearing today?". We're just that close. I think my personality changed a lot".

 

Source: TV Daily