Yoo In-na "Ji Hyun-woo! Stop smoking!"

Yoo In-na worries about Ji Hyun-woo's health.

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On the live radio show KBS FM "Yoo In-na's Raise the Volume", Yoo In-na admitted to being in a relationship with Ji Hyun-woo.

She admitted it and also said, "Ji Hyun-woo if you're listening, quit smoking like you promised me. Smoking is bad for you".

A listener said, "Are you listening? Thousands of people are listening and watching you". Yoo In-na then said, "I think someone will come and tell me if you don't keep your promise" and aroused laughter.

Meanwhile, those who heard this day's program supported the couple and told them they look good together.