The term used to describe the synergy between Wolverine from the X-Men series and Akuma from the Street Fighter franchise in the crossover fighting game "Marvel vs Capcom 3: Fate of Two Worlds." This pairing is one of the most powerful pairings in the entire game, hence the name "best friends forever."
Man 1: Justin Wong is rockin' that She-hulk/Wolverine/Akuma team into finals!

Man 2: Man, it's the best friends forever. Too bad he's facing off against a Phoenix team; he should have used that Tron for the Level 3 grab and drill assist...
by Sir Gootecks Ross, DDS September 9, 2011
A best friend forever is someone who will never leave no matter how much you want them to sometimes. A best friend forever is a person who loves you so much you already know that your kids will be best friends when you're older. You always have each other's backs when something comes up. You show up at their house whenever. Lastly, no matter how far away you are from each other, you are always helping each other when one of you needs something.
1) Used by someone to make you feel special, when really they have 50 best friends.

2) Used to obtain food, etc...

3) Used to sustain genuine strong friendships.

Often abbreviated BFF.
"Hah, you're my best friend forever!"

"If I can have some of that sandwich I'll be your best friend forever!"

"Let's hang tmrw k?

Mark (Your BFF)"
by Azoundria January 9, 2009
A person that you love and appreciate. they are always there for you and you are there for them.
Gabi is my Best Friend Forever (BFF)
by Jimmy3207 May 16, 2019
A party where girls and guys have sex and the guy gives the girl a bracelt saying to keep it a secert and that they are now "best friends forever"
Tom: are you going to the best friends forever party this weekend.
Kate: Yea, i cant wait to find new best friends forever
by ae_chick May 14, 2009
A best friends forever club is a group or 3 or more people that consider themselves best friends. They cant be best friends, cause there are more than 2 of them, so they become a club.
Richie, Jessica, and Andrea are in the best friends forever club. They always sing this cute little song

Andrea : "Best friends forever"
Jessica : "Best friends forever"
Andrea and Jessica : "Best friends forever"
Richie : "Club"

They love eachother very much.
by xxkissxthexboyxx December 5, 2006