Girls, why do teenage girls act so immature, talk only about boys and have to be so loud? ?

I'm 13 and mostly do not care for relationships, and all the girls do is talk. And talk. And not even about important shit, its just about guys and their types. 1, Why do they act this way? And 2, What do they expect from guys?

Girls, why do teenage girls act so immature, talk only about boys and have to be so loud? ?
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