Yoon Han met Lee So Yeon's sister on the October 5 episode of 'We Got Married'.

Yoon Han impressed right away with his manners and piano skills. He chose an organic restaurant for their first meeting with Lee So Yeon's sister, who is almost due to have a baby. 

Lee So Yeon said, "He really put in effort for my little sister. The way he plays piano is so impressive. That song was very beautiful," while her sister commented, "I came not expecting anything, but he's a really good person. I'm happy to have a good brother-in-law." He was also sweet enough to prepare a gift of baby socks.

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Later during their solo interviews, Lee So Yeon admitted, "I think about him when I get home," and Yoon Han also confessed, "I miss her."