Why does this married guy coworker always watch me and says he can read my emotions and how I feel through out the day?

Like at first he didn’t want to talk to me then he couldn’t take it and came up to me and asked me if I was mad at him I said no then he few min later tried getting my attention again and asked if everything was alright I said why you asking he said you just not acting yourself today I said how you know and he was like bc I can read you really well like why he care

Why does this married guy coworker always watch me and says he can read my emotions and how I feel through out the day?
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