Yes, K-pop idols do marry non-celebrities.
While relationships and marriages of K-pop idols are often a sensitive topic due to fan culture and image management, there are examples of idols marrying individuals outside the entertainment industry. One such instance is that of Kim Ji Won, also known as Bobby from iKON, who married a non-celebrity fiancee and welcomed their first child in September 2021. This demonstrates that it is possible for K-pop idols to form lasting relationships and marry individuals who are not public figures.