On the March 15 broadcast of 'Radio Star', Suhyun shared about her overprotective brother Chanhyuk.
She explained, "Since it's my last year being in the teens, I often say it's time for me to get a boyfriend. And because of that, I feel like my brother is watching me. One day, I called over my oppa because I had to talk to him about something and he kept asking, 'Why? Did you get a boyfriend? You have a boyfriend, right? You have a boyfriend?' He was annoying and I got mad so I just said, 'Yeah, I have a boyfriend.' Oppa looked so shocked. He sat down and lectured me for 2 hours. He asked me how far I went with him."
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Chanhyuk added, "I asked if they held hands. I asked when they are going to and she said they already have. But I asked how many times they've met and she said once."
On the other hand, Suhyun revealed that she doesn't care much about her brother's love life. In fact, she wants her brother to be in love because that means more music production.
At the end, Chanhyuk explained that he is supportive of Suhyun's love life and encourage her to date. However, he just wants her to meet someone good since it's her first love. He also claimed that he becomes more protective and caring since their parents are not with them in Korea.