Why did this older man at work say hi to me when I entered the room today while he was talking to another female coworker?

They were having a normal convo which is something many men don’t do with ME. They only want to see me as a dumb blonde type and flirt only. I don’t deserve any respect.

usually he flirts to me stares intensely in my eyes.

Why did this older man at work say hi to me when I entered the room today while he was talking to another female coworker?
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