Backstabbed, betrayed and had my personal life posted on facebook by my ''best friends''?

Well for the first part its not nice to talk about someone behind there back but im not some 40 year old vigen teacher *****. im a teen and ive had the same problem. I would trust ally, And if you dont want it on facebook call the cops and get her facebook delited for harrasing you. No true friend does that. Hope i Helped :)