There is a way hook ups are serving young women. And it was important for me to always talk about how behaviours were serving girls, not just making them the victims.

Parents tend to name all of baby boys' body parts, but with girls they go from belly button to knees with this void in the middle. That doesn't change as kids go into puberty.

We continue to think of virginity as first intercourse. That ends up minimizing and marginalizing other things kids are engaged in, like oral sex. And it's not going to feel particularly good for girls as the big marker of adulthood.

Saying "yes" [to sexual activity] is a pretty low baseline for sexual experience and I wanted to write about what was happening to girls after "yes."

I talked to a junior in college, and she was fed up. She said, "I'm not doing other girls any favours by faking orgasms and not calling out guys when we're having unequal experiences."

We're afraid if girls find out sex is pleasurable they'll stop being gatekeepers, they'll go out and have sex.

It's not that pink is intrinsically bad, but it is such a tiny slice of the rainbow, and, though it may celebrate girlhood in one way, it also repeatedly and firmly fuses girl's identity to appearance.