On May 8 episode of SBS' television show 'My Little Old Boy', the members of the show visited SiWon's home.
They arrived at SiWon's place before him, and made a street-bar-like place in his living room for a surprise birthday party.
When SiWon arrived, he was taken aback after seeing how his living room turned out and asked where all his stuff went.
HeeChul playfully answered, "We threw all of them away. We wanted you to break out of your 'gentle' image today."
He continued, "You know, you are always trying too hard to be perfect. No girls like that. Look at me, I'm a total clean freak. That's why I'm a failure at 40.", then laughed.

He went on, "But girls are unable to come closer to you, as you seem too perfect; there is nothing they can do to take better care of you."
HeeChul once again emphasized that SiWon was way too perfect, "I'm a clean freak outside, but you are a clean freak inside."
He resumed, "Are you going to only drink wine for the rest of your life? You've got to drink soju (Korea's most popular liquor) or makgeolli (Korean rice wine) every now and then!"

As soon as SiWon left, HeeChul shared a surprising fact to the members.
He said, "I've known SiWon for like 20 years, but I've never met any girls that he's ever dated, whether they were his girlfriends or girls who he was simply getting to know."

(SBS Star)