Early this year, Sung Joon revealed that he has a non-celebrity wife and child but their wedding has been on hold for two years due to his military enlistment. But on September 12, Sung Joon and his beloved will finally exchange vows through a private ceremony in Seoul. The couple will be joined by their respective family members and selected friends due to the pandemic.

Sung Joon was discharged from the military last July 2020 and the wedding registration was made in 2018 prior to his enlistment. The actor plans to go back to acting once all are settled as he enters a new chapter in his life.

It was known that prior to his enlistment in December 2018, Sung Joon completed his marriage registration with his non-celebrity girlfriend and they discovered that she was pregnant. He did promise to marry her in which time the best thing to do was to register the marriage first and will do the proper ceremony after.

The actor did active military duty on the ground for about a year. He then requested for a change in assignment and chose to carry out the remainder of his military service as a full-time reserve in order to give full responsibility with his wife and child.

Sung Joon shared a touching handwritten letter to his fans. An excerpt of the letter below expresses his happiness:

"Being the head of my household, I wanted to protect my family and live closer with them. I wish to take this opportunity to honestly share with you all my personal story though it may be late. It is good and happy news for me and my family. Thank you for all your understanding and I will carry out my remaining military service, return to acting soon, and a more mature person who will head my household. My gratitude to you all".

Sung Joon is a model turned actor and debuted in 2011 in the drama "White Christmas". He appeared and known for his role in in drama "Flower Band", "Can We Get Married", and the film "The Villainess".