HaHa revealed he saw his wife Byul's ex-boyfriend at their wedding.

On the January 10th episode of comedian Lee Guk Joo's YouTube series, HaHa and Byul featured as guests, and Lee Guk Joo mentioned rumors that Byul dated singer Na Yoon Kwon. HaHa responded, "It's not like she and Na Yoon Kwon dated. I wouldn't be uncomfortable with him," adding jokingly, "I did hear that Byul and Na Yoon Kwon dated though. Be honest about it. No wonder Na Yoon Kwon would slowly avoid me whenever he saw me."

Byul said, "Be careful what you say. Yoon Kwon is getting married soon. When Na Yoon Kwon and I were promoting 'Hello' together, we were active together like we were a group. We even had full day schedules in rural areas." HaHa replied, "The term 'full day' makes me really mad."

HaHa then revealed he saw Byul's ex-girlfriend at their wedding, saying, "We're kind of like a Hollywood couple. Byul's ex-boyfriend came to our wedding. He was watching as he hid in the back." Byul also said on their marriage, "To be honest, we've been together for over 10 years, and I'm okay with my husband treating me well and things like that. He doesn't have to treat me that well. I just want him to not piss me off."

HaHa and Byul tied the knot in 2012, and they're currently parents to 2 sons and 1 daughter. The couple also celebrated their 11-year anniversary last month.