Why do “nice guys” think they’re entitled to you because they’re nice?

Like no one is entitled to anything. If you’re nice to me that doesn’t mean I’m gunna throw my panties down for you. Nice should be simply doing a kind thing because you want to help someone or show compassion. If you’re doing said things only because you want in her tights and not because of good will then that’s not nice that’s just serving self interest.
Why do “nice guys” think they’re entitled to you because they’re nice?
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