Actor Kim Sung-soo had a serious conversation while meeting Park So-yoon's mother in person.

In the second episode of Channel A's variety show "Groom School 2," Kim Sung-soo and his girlfriend Park So-yoon visited Park So-yoon's mother's restaurant located in Ulsan. Although Kim Sung-soo could not hide his nervousness during their first meeting, he eased the atmosphere by presenting gifts of Park Dal crabs and strawberries that he had prepared. Later, when the restaurant became busy with customers, Kim Sung-soo naturally helped with serving, reducing the awkwardness with the mother.

At this moment, Park So-yoon's mother asked Kim Sung-soo what he liked about her daughter, and Kim Sung-soo replied, "We haven't even been together for 100 days, but I like that she takes good care of herself and has a transparent personality," adding, "She smiles brightly like her mother, which positively influences those around her. And isn't she pretty?" When asked about his thoughts on marriage, he explained, "I think marriage is when you look at each other and face the same direction. We are at the stage of approaching each other."

Park So-yoon asked her mother's opinion about their 12-year age difference, and her mother reassured Kim Sung-soo by saying, "It doesn't seem that way." The mother also said, "Because my husband was sick for a long time, health is the most important thing above all," and added, "As long as the two of you live happily together, that is enough." Through the meeting with her mother, Kim Sung-soo said he got to know Park So-yoon more deeply, stating, "The relationship feels mature. Seeing her mother reminded me of my own mother. Seeing each other's families makes us think seriously about each other."

The broadcast showed Kim Sung-soo becoming closer to Park So-yoon's mother by hugging and holding hands after the meal. Their relationship is currently at the stage of getting to know each other, drawing attention to whether it will progress further in the future.