I need help on friends problem please?

[Michael]

So one day my friend and my best friend was fighting over a picture that my best friend put on facebook, I wanted to be mutual so I said to my best friend that her picture of a horse was beautiful and then I said to my friend that I know that's not her horses but why fight, and next day was Monday, during school my friend was like why are you defending her, and she was mad, and didn't want to speak to me until, my best friend sent me text of what happen between her and my friend, I showed her the text and she got angry and said I need space, and now she delete me on Facebook, which now I think she doesn't want to be friends anymore.
For me I'm heartbroken I lost my best friend and one of my school friends just because a fight of a picture
What should I do to make my friend and my best friend to become friends with me again?

[Karen]

i ont get it. its just a picture. if you look stupid in pictures. just have a laugh! its no big deal aand its not the end of the world. tell your friends that good luck! -karen