a gay best friend, a common nickname for a straight guy who talks to a girl extensively about her personal problems and life issues
I hear Kutgun is a real GBF! Apparently he spent tonight talking to Naomi, cuddling with Maria, and talking to Momo about her boy trouble!
by Gat Bammings March 03, 2008
Top Definition
Gay British Friend or Gay Best Friend is the male companion of a female whom the female could never see as a romantic lover/partner. The GBF and the female do everything together like would a couple, except he will never get laid and he will never get the girl.

The term GBF originated in Britain during the early 20th reflecting the social/cultural relationship between British men and British women. British women viewed British men as brothers or "sisters" but never as romantic partners. The desperate British man still wanted to be with her so he became her Gay Best Friend in order to be with her.
Woman: I'm so lonely I wish there was a man around here!

British man: What about me?

Woman: No your the GBF.

Woman: I want to go shopping and get my nails done but I have no one to go with..

British man: I'll go with you, i need to get a pedicure anyway.

Woman: What would I ever do with my Gay Best Friend!
by britishman4ever December 30, 2012
An acronym for Gay Best Friend. A homosexual man who is the best friend of a woman.

The GBF is a fashion accessory mainly found adorning city women having risen to popularity in the late 90's. GBF's are prized for having acute fashion sense and therefore suitable for shopping trips. Also known for better understanding the mysteries of female nature and therefore a good Agony Uncle and conversationalist.

GBF's are sometimes used as stand-in boyfriends at social/business/family gatherings when a woman has no real boyfriend.
"Mike is soooo hot. Too bad he's just my GBF."
by Umbongo - England March 31, 2003
GBF-Gay best friend. A Gay best friend is a male best friend to a woman. A Gay best friends doesn't necessarily have to be gay. It can just be a boy/man that you could never be lovers with but you still do everything with. You can have more than one GBF any boy/man you can trust to go shopping with, share feelings, etc.
Girl: "Omg Will I love you, but not like that."
Will: "That's right because I'm you GBF
by YeahISuckToes January 07, 2009
Gay Best friend - that guy who is always there for his girl mates. Talking to them about boys, clothes, other girly stuff. GBF Leeds often uses the alias Max Fakhre.
Max is so Ronak's GBF.
I'm so my mum's GBF.
by truthinleeds April 26, 2014
The GBF is the best type of friend any girl could have. GBF is an acronym for a Gay Best Friend
or a Gay British Friend. The GBF is the best type of friend a girl could have as they aren't jealous of you like any other bitch and don't want to screw you like a guy. they suppositivly have amazing fashion sense and give comments with just the right amount of sassy bitch!

The use of the term 'GBF' became popular after the popluar teen movie "G.B.F".
{ picture below }
Ashley: "do you want to go shopping after school?"
Magnolia: "bitch?! I'm getting skinny lattes' with my GBF"
Ashley: " how about after?"
Magnolia: "then were gonna' go talk shit 'bout people gtg!"
via giphy
by jungle_red_105 June 04, 2016
Gay Best Friend.

A friend of the opposite gender that you will never have a relationship with; you treat them as though they were gay.
"I really like Sara, but I'm afraid I'm her GBF."
by Aaron L. M. Goodwin August 14, 2006
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