5. He’s Reluctant to Introduce You to Friends

If a guy consistently avoids introducing you to his friends or colleagues, it could be a sign that he’s hiding something—possibly a wife or girlfriend. Friends would likely know about his relationship status, so avoiding this step helps keep secrets intact.

Evidence: In Korea, friends often play a big role in relationships, and it’s common for couples to hang out with each other’s social circles. A reluctance to do so is often a red flag.