Can you believe I'm going to sleep with my best friend's close friend?
What is the reason that you would want to sleep with your best friend's close friend?
Because I'm sick of being commanded by my best friend. She has no control over my life.
You have a special relationship with your best friend that should be respected. Sleeping with her best friend drives a wedge between you. Keep your romantic and personal relationships separate.
It's not like we are really best friends, she's just my friend
Well, you did say your were best friends at first, what made you change your mind now? If you don't care for the way they treat you there is always talking to them first in order to avoid more drama.