She cried too.
If she don’t treat you as a best friend, do you think she would cry over that matter?

You will never understand how it feels to be “sandwich” between your boyfriend & best friend.
手心也是肉,手背也是肉.

I’m not trying to side her, but you should think about what you said. Isn’t it a little too harsh to say all this to someone you call Friend? She may be in the wrong, but you’re not right in saying these either. So you should think it over before you start tearing this friendship apart.

Not sure if this post will help. All we need is for you to understand it yourself.
I’m saying this because I want to salvage this friendship.
Not to reconsider this friendship, but to make this friendship stronger.