To be honest, they probably misinterpret real love as lust. It's a common misconception because of how people use and manipulate each other.
For sex, specifically.
It could have to do with the change of tide of women's roles in society. Women aren't able to give their children enough loving attention because of the stress from everyday living.
It could have to do with the imprint made on us, that affection = sexual frustration.
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