Youngji was a guest on the September 30 airing of 'Kim Chang Ryul's Old School,' talking about her past heartbreak. 

DJ Kim Chang Ryul brought up the topic first, asking her about the boyfriend she had during her school days. Youngji opened up, "I take relationships seriously so I was really hurt. He cheated on me with my friend." 

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DJ Kim Chang Ryul consoled her, "How awful. Why would he do that to a pretty girl like you.." Youngji responded, "I was so hurt that I thought I should take a break," revealing that she didn't date for a while after that.