Sungmin will be holding a quiet wedding ceremony with Kim Sa Eun.
According to allkpop, the 18th's episode of KBS 2TV's 'Entertainment Relay' reported on Sungmin's upcoming December 13th wedding.
They talked to Kim Sa Eun's label, who said, "Their parents met to plan their wedding.
They met from the musical 'Three Musketeers', and they didn't date for too long."
The label added, "They'll have a private wedding, and they'll be going on their honeymoon right after their wedding."