Ladies, would you be okay with your boyfriend/husband having a female best friend?

Depends on whether she is jealous or not, especially if they have been friends a long time before a new girl or wife came along.
It could work both ways. There have female besties of either partner who couldn't wait to jump into the wife's shoes given the chance. I remember one who jumped straight in just three weeks after his wife died, everyone could see through her except him.

im a male, but i wouldnt mind if my boyfriend had a female friend. the fem friend he has is really distant in space but rly talkative, i don't mind her as shes both our childhood best friends.

It would take more than that to make me jealous.

It depends on them and how long they've known each other a whole bunch of factors.

Probably about 95% of the time unrelated opposite gender friendships do come to a point at some time where one or the other person is viewing the other person sexually. Provided that one of them is straight.

If they both had a good boundary with each other. They weren't acting suspicious around me I had no reason to be jealous and my boyfriend's paying the attention to me and they've known each other a long time I wouldn't care.

Would you want your gf or wife to have a male best friend?