Women And Their Ages

Whats the difference between women at ages of 8, 18, 28, 38 and 48 ?

Age 8 : You take here to bed and tell her a story.

Age 18: You tell her a story and take her to bed.

Age 28: You don’t need to tell her any story and take her to bed.

Age 38: She tell you a story and takes you to bed.

Age 48: You tell her a story to avoid going to bed.