Face it.
There's always the girl's best friend who is always too bubbly and cheery than one can ever imagine.
They always meet in a coffee shop, exchange their numbers and suddenly become the best of friends.
Would you ever give your number to a person you just met in a coffee shop?
No, no sane person would.
Last but not least, these best friends are always the ones who steal the main woman's man, beat that if you can.
Here's an excerpt.
Cindy and I had been best friends since I moved to Barcelona, she's the best. We met in a Barcelona's coffee shop, she bought me a cup and I gave her my number, completely ignoring the fact that she could have been a murderer or a fucking sadist who would later enjoy to see me getting tied and beaten up.
Any who.
I still love her, so yeah, that's that.