His wife Kim Young Jo gave birth to her son, who weighs 3.4 kg. Yoontaek said that both mother and child are healthy, and that he is glad that the son looks just like him with his thick lips.
On the other hand, the story of birth will be aired on "Star Couple Show, Honey." They revealed the fact that Kim Young Jo was once divorced. Yoontaek got a lot of support from the viewers when he said that every one falls in love, and some times it ends badly.

Yoontaek married with Kim Young Jo on January, who works in fashion industry.