How can I tell the difference between a girl that is being an attention whore or one that is worried that I just want to fuck them?

most women I’ve talked to play hard to get and i feel like I have to sit here and do E=mc2 to figure out if they’re just being an attention whore or if they are worried I just wanna fuck. So how can I tell? Because they tend to exhibit the same behavior.
How can I tell the difference between a girl that is being an attention whore or one that is worried that I just want to fuck them?
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