On the March 6 airing of KBS2's '1 vs 100', Chaeyeon revealed it's been 5 years since she dated. The MC then said, "Didn't you have a love line with Kim Jong Kook?", asking if they've actually had anything offscreen.

Chaeyeon replied, "He's not mine. I was a fan of him but we don't contact each other. We're still awkward and uneasy."

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In the past, Chaeyeon appeared on 'Star Date' as a fan of Kim Jong Kook. The two stars also had a love line on the hit variety show 'X Man'.