Does FF exist?

It does. In the Fantasyland of women. It does exist there and it is the most candor and real kind of friendship. And there are no other people and living creatures who are able to be such candor friends like women are. They are the very best friends and they will stay next to each other whatever happens. Those are wrong who believe that there is no f-friendship.
In the Fantasyland of women, where the f-friendship exists, every one knows that stories about female friendship doesn't exist are stories made up by jealousy man. They are men who want to make women believe that there is no female friendship. They need it as f-friends are able to point out all the drawbacks of man the woman in-love can't see.
Though, to my humble opinion the Fantasyland is the only place for female friendship to exist. With the lapse of time they grow up, they have their families, their husbands and kids to care about. They have a number of things to do and they have no time to spend with their friends. No one knows why men manage to save their friendship even when they are married, but in most cases women always fail to do that.
A lot of words may be said about female friendship and any words will be the right words. But the truth is, that we are different and we percept this world and phenomena of this world in different ways. So, both answers are right: does exist and doesn't exist. It depends on the person, its character, foundation and its trust for people. No matter you are a man or a woman, it is important to be human first of all, and than friendship will become real.