How can bring two fighting friends back together? Help!!?

Well, I don't think they would want me to use their real names on here, so I'll call them Sammy and James. They used to be best friends, like even during this school year and they got into a huge fight. I don't know the details, but basically now they hate each other. After a while of not talking to each other and trying to back-stab the other, James wrote Sammy a letter apologizing. She said sorry, let's be friends, not bff's, but not enemies, etc. etc. Sammy tore up the note and threw it away. Now they're still mad at each other and are bringing other friends into it too. Like me, "Ashley", "Kenna", and a couple others. they're fighting over us and saying stuff like: " stop tying to steal her away from me!", etc. I'm not taking sides, I'm still friends with both of them. I know whta you think: chick drama, it'll p, but so far it hasn't and it won't any time soon. Do you have any ideas about how to get them back together? thx! :)