Well why does it bother you? You should ask yourself that. If you like your guy best friend too then you should inform her about that. If she was a true friend than she would understand. But if not then you should be happy with them being together. That's what a true friend would do.
Tell your best friend that you are not okay with that situation.
Well if your best friend loves him back then there's a problem but if your best friend dates him but u LOVED him first the your best friend isn't a true friend... I have a best guy friend which I have been in love with for over 5 years but he loves my other best friend and she started to have a crush in him and now my two best friends are dating so I talked to my best friend that's a girl and she understood so now we are back to normal and my other best guy friend can never change our friendship... I'm just saying that u should never let a guy come in-between your friendship! Just talk to your best friends about it and I'm sure they will understand! I hope this helped
Compare that friend to other friends, if you get along best, it's your best.
Creepy Best Friend - 2011 was released on: USA: 2011
My Best Friend's Lover - 2001 was released on: USA: 2001
Your Best Friend - 1922 was released on: USA: 26 March 1922
His Best Friend - 1911 was released on: USA: 27 January 1911
His Best Friend - 1913 was released on: USA: 11 December 1913
Best Friend - 2005 was released on: USA: 20 July 2005 (limited)
Man's Best Friend - 1903 was released on: USA: April 1903
Man's Best Friend - 1911 was released on: USA: February 1913
If your friend was whispering to your other friend about what you did to your best friend on accident, it means that friend likes to gossip and stir the pot, causing trouble. Maybe this whispering friend isn't really a friend at all.