On the latest '1 Night 2 Days', cast member Sung Si Kyung called IU over the phone to complete the 'contact a celebrity' mission. The producers gave him the goal to get IU to tell him he's handsome. 

He succeeded with IU saying, "Of course, oppa's good-looking," and he responded, "Okay, Ji-Eun, sleep well." The two singers previously collaborated for the track "It's You". Sung Si Kyung revealed, "At a concert with 6000 guests, I asked IU, 'Do you like oppa or Nichkhun?' and she answered, 'I definitely like oppa. I'm not very interested in good-looking guys.'"

Viewers commented, "Sung Si Kyung and IU seem close," "He's like a caring big brother," "I'm jealous," and more.

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Do you agree with IU?

Tip: ally