IU recently appeared as a guest on tvN‘s House on Wheels where she and actor, Yeo Jin Goo proved just how close they are.

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tvN Hotel del Luna

As soon as IU arrived, she gifted Sung Dong Gil and Kim Hee Won with coffee that her father dripped himself.

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And in response, Sung Dong Gil expressed, “I love coffee” while also adding, “Hee Won doesn’t know anything about coffee.

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But Kim Hee Won revealed that IU isn’t a fan either.

Hyung, I heard Ji Eun (IU) doesn’t drink coffee either.

– Kim Hee Won

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Surprised by this, IU asked how he knew that, and the answer deeply touched IU.

Jin Goo told me.

– Kim Hee Won

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Realizing Yeo Jin Goo remembered this about her this whole time, IU expressed just how impressed she was, and Yeo Jin Goo flashed a proud smile back at her.

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Ahead of this variety show, IU and Yeo Jin Goo starred in tvN’s Hotel del Luna together and continued their friendship ever since.

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But it turns out, they might be even closer than everybody thought.

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And nobody’s complaining.