Do you act nicer or more abrupt and indifferent towards a colleague who has a crush on you?

Say that you can tell that someone at work has a crush on you. Do you act nicer and gentler towards them, or do you try to help them stop liking you by acting indifferent, distant, and abrupt? This is assuming you don't like them back. Is it awkward knowing they have a crush on you?

Do you act nicer or more abrupt and indifferent towards a colleague who has a crush on you?
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