Chen, a member of boy band EXO, disclosed his wedding plans in a surprise announcement on Monday.
He posted a hand-written message about his impending marriage on his website run by his fans, hinting that his fiancée is pregnant.
"Chen has met someone special to him and will get married soon", his management agency SM Entertainment also said in a press release the same day.
"The bride-to-be is not in show business, so they will have a private wedding with only family members and close friends in attendance", the agency said, adding that there will be no further details.
Chen is set to become the first of the nine-member band to get married.
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