On December 12 episode of SBS' television show 'My Little Old Boy', LeeTeuk's older sister actress Park In-young's wedding ceremony was shown.
On this day, HeeChul hosted the wedding ceremony with SiWon, while YeSung sang a song for the couple.
As soon as HeeChul came over, his mother said, "You should be getting married, not hosting it, HeeChul. You promised to get married before you turn 40 (Korean age). You're turning 40 next year!"
HeeChul shook his head side-to-side and responded, "Ah, I don't think I can get married. After hosting the ceremony today, I've become more sure about that. I'm just going to live with my dog."
There, the members of Super Junior started speaking about a Super Junior member who will get married.
They all pointed out that it was going to be RyeoWook, and stated that it had to be him.
At that time, RyeoWook lost and became the first one who had to get married.
HeeChul said, "I mean, we played that game. RyeoWook must keep his promise."
EunHyuk laughed and added, "Not only RyeoWook made a promise with us, but he also made a promise with the viewers. So, he can't ever break that promise."