Girl, so confusing

I heard a great song and it felt like summer.
I was in love with all my friends and 
We were dissecting our sex lives,
We perfumed ourselves with hairspray and cried with laughter over glitter.
We were glad to be older than we were before, 
Me and her together 4eva, 
shaved head and baby face, 
long skirt and training bras. 
Counted it out on our fingers, 
Known each other long enough to have 
Twinned green eyes, 
We were scared of you then, 
And now we spend the drive screaming along.