When I was in my twenties, I thought the secret to being irresistible was being easy. Not academically easy, but Cool Girl easy. The one who threw back beers with the boys, laughed off offensive jokes, was always down to “kick the footy” and never — ever — made a fuss. You know exactly what I’m talking about. You’ve probably even tried to be her.
The Cool Girl has been mythologised in film, TV, and pop culture for decades. She’s Cameron Diaz in There’s…

