He told me someone asked if we were a couple, why?

Long story short I asked a coworker to do a presentation for me at church. He did, everyone really liked it. I was walking him to his car and he brings up a comment made to him. He says “Someone asked me if I’m ‘your doctor’ ” I was a bit confused at first because I thought they were asking if he’d treated me as a patient. (Which was wrong because I introduced him as a coworker) And I looked at him confused and said “Huh, what do you mean?” He says it again and it clicked for me 😂 that someone asked if we were dating or a couple. But it made me wonder, why tell me that? Could have been gauging my reaction?

He told me someone asked if we were a couple, why?
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