It's a classic scenario, one we recognise in Jane Austen right up to present-day Hollywood: the girl loves the bad guy, and the more he mistreats her, the more she loves him. Of course, after the inevitable descent into heartbreak, she meets the good guy and lives happily ever after.

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Why women love a bad guy

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Sadly, in real life, women do fall for guys who don't deserve them – and things don't always end happily. So, why don't women grab a good thing when we see it?