The intangible nature of when a young person is ready to start exploring their sexuality is reflected in the variety of ages of consent across the developed world.
Ranging from 14 in countries such as Austria and Portugal, up to 18 in places like Malta and Turkey.
Ever since the Film Classification Board slapped new flick Diary of a Teenage Girl with an ironic 18 rating - prohibiting most teenagers from seeing it in the cinema - critics and viewers have rushed to laud its brutally honest representation of youth sexuality.
I watched the film in utter glee, thinking the whole time how much I hoped that girls across the country would watch badly pirated copies on their laptops.
You see they need to be exposed to its glorious message: female teens are painfully, burningly and aggressively horny.
Almost a decade ago, when I was 15 (the same age as the film’s protagonist) there was no Caitlin Moran writing blatantly about learning to masturbate, there were no self help websites telling you that your burgeoning sexuality was normal and there was no Diary of a Teenage Girl.
Instead the myth that girls didn’t masturbate was still hanging around.
Even in the early 2000s, we came of age believing that teenage boys were the randy ones.• Bel Powley interview: 'I want loads of girls to see Diary of a Teenage Girl and share my experience' At the most basic level, Diary of a Teenage Girl is a film about a 15-year-old girl who has a lot of extremely gratifying sex with a man who is 20 years her senior and happens to be going out with her mother.Which, when you think about it sounds rather a lot like an abuse case. It’s not abusive because the protagonist, Minnie, doesn’t feel abused.The conclusion of the film suggests that she might regard her affair with him as a mistake, but mistakes and abuse are entirely different things.The story left me wondering if perhaps the way we try to protect young women in 2015 might actually be preventing them from having experiences, making mistakes and really living their lives. Male sexuality apparently doesn’t need to be protected.We smile when we hear stories of people such as Lord Byron, or more recently US rapper Chris Brown - who both lost their virginity before the age of 12.