According to insider website, there is an unwritten rule in the KPop industry that indicates that the idols should not talk about their dating life, or even not have any dating life. The theory is that being single makes them appeal more to a larger group of people.

Why is dating not allowed in KPop?

No dating allowed. An unwritten rule in K-pop is that idols must also give up on having a love life if they want to be successful. Being single makes them appear more accessible to their fans. This is also why K-pop groups are either all-male or all-female, too — so fans dont suspect band members are dating each other