Any subtle signs that a man is married or in a relationship?

HE HAS NO SOCIAL MEDIA. But he did give me his full name and I am able to find some of him online. He also gave his Mom & Dad’s name, but there are just no signs of him on social media. He is consistent, but lately I have been feeling odd about him. Should I go with my guts? Or continue to give him the benefit of the doubt?
Any subtle signs that a man is married or in a relationship?
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