According to SPOTV News' report on January 25, CHANSUNG's fiancée is a non-celebrity who is eight years older than CHANSUNG.
As CHANSUNG is currently 33 years old, his wife-to-be is 41 years old.

CHANSUNG and his fiancée have been in a relationship for over five years.
When CHANSUNG announced his marriage through a handwritten letter, he wrote, "While preparing the wedding after my military discharge, a new life came earlier than expected," hinting that they are expecting a child.
▶ [SBS Star] 2PM CHANSUNG Announces Marriage & His Fiancee's Pregnancy

(SBS Star)