Jungyeon dropped the bomb on her sister Gong Seung Yeon's former crush on the November 16 airing of MBC's 'Radio Star'!

She revealed that her sister's ideal type used to be Kyuhyun.  The MCs asked her, "Why does your sister like Kyuhyun?" and she replied, "I'm not sure about that.  My sister used to be a trainee at SM.  At the time, she liked Kyuhyun."

SEE ALSO: Controversial Japanese adult actress festival 'The 2024 KXF The Fashion' is now canceled

Kyuhyun said, "Why didn't she tell me back then?  I think I'm happy when someone says I'm their ideal type," and looked shy.  Jungyeon said bluntly, "You're not [her ideal type] anymore."