Am I over reacting?

So I posted a pictures after may be years. This guy who i know since 10 years (who had or have crush on me) commented your hair are thinking. What's wrong with you? You had a beautiful hair. Do see a doctor. Though it was a picture in dark my hair are barely visible. I replied him "people can't see others happy and have to say something negative so you feel bad."
Am I over reacting?
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