He and Gaeko were interacting with their fans via the live 'V' app by reading aloud their real-time comments.
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Gaeko suddenly read a comment that went, "My heart is really sulli sulli (a play on the Korean phrase 'Seoll-eh' meaning that you are feeling excited/anxious)," Choiza replied in an embarrassed tone, "Why would you read that [comment]?" Gaeko simply said, "Because [the fans] wrote it."
That's what friends are for!