Taking a woman to bed

What is the difference between girls/women
Aged 8, 18, 28, 38, 48, 58, 68, and 78?

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At 8

You take her to bed and tell her a story

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At 18

You tell her a story and take her to bed

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At 28

You don't need to tell her a story to take her to bed

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At 38

She tells you a story and takes you to bed

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At 48

She tells you a story to avoid going to bed

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At 58

You stay in bed to avoid her story

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At 68

If you take her to bed, that'll be a story

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At 78

What story? What bed?
Who the hell are you?