In episode 644 of MBC's variety show "I Live Alone," the friendship between singer and actor IU, actor Yoo Soo-bin, and Lee Yeon was revealed. During the broadcast, the three mentioned that Yoo Soo-bin and Lee Yeon had visited the funeral when IU recently experienced a family bereavement while they were having a meal together.

IU said, "Not long ago, my mom and dad were very thankful to the two of you for coming to the funeral," expressing gratitude to both. Yoo Soo-bin explained that IU's maternal grandfather had passed away. IU stated, "You two were almost the only friends who came. I was touched that you came right away." He continued, "When you came, both of you brought chocolates. Maengdal (Yoo Soo-bin) packed chocolates by flavor in zipper bags because the bereaved are tired. It really gave me great strength. Later, Yeon came, and she also brought chocolates," expressing his appreciation.

Additionally, IU said, "At that time, my mom and dad said Maengdal (Yoo Soo-bin) is really handsome in person," and when Yoo Soo-bin laughed upon hearing this, he added, "He really likes it when I say this."

Meanwhile, IU and Lee Yeon mentioned Yoo Soo-bin's upcoming work "High School Detective," saying, "As soon as filming started, he became less responsive. You can feel the tiredness in his replies." They added, "He stopped coming into our group chat. He must have moved to the other group chat." In response, Yoo Soo-bin said, "I knew you would say that. Can you live without me?" and Lee Yeon replied, "A traitor must be executed."