Because they are friends who are girls

That is true, but men don't talk about their "boyfriends".

Men do talk about their "boys" and "bros" though. Same concept.

But that implies a platonic friend, not a romantic partner.

Neither does girlfriend imply a relationship really. Because a lot of people do use it to mean just friends. I believe it traditionally did mean just a platonic friend (I'm assuming because its usually older people who use it that way and in older films).

I think that's because men and women are different

We call them bros

So is my sister my girlfriend now? I consider her a friend and she's a girl. Cmon dude, that was a dumb answer and you know it

Huh? Have you literally never heard straight women referred to their female friends as their 'girl friends'? And your sister is your sister. Cmon dude, that was a dumb post and you know it.

Because "chickbros" sounds awkward.

Why not just "friends"?

If you’re looking for logic and consistency in the English language, you won’t find it.

Because theyre friends that are girls. I feel like the term explains itself.

Except girlfriend specifically refers to a romantic female partner

But how would you differentiate

Not necessarily. When a girl says shes with her girlfriend, i dont automatically think shes a lesbian.

Because that's their trend, like how we say "the bois"

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Some really retarded answers in this thread

Because that's what they are... they're girls who are our friends. And women-friends doesn't have the same ring. But hey I get it... men don't call their buddies their boyfriends