X boyfriend... BIG PROB.?

I went Out with this guy for two months. I tried breaking up with him and then he begged for me not to do it. Then 3 days later he breaks up with me. WTF? I deleted him from my facebook and lost all contact with him...today he post a bunch of crap about me on facebook and shares personal letters that we shared togeter and posts those on facebook too. I dont know what to do. I dont like him anymore at all but he has taken it too far to puting personal stuff on fb.. even medical problems that I had told him about and told him NOT to tell any1 else. I am sad mad and scared because now he has shared personal things that no one was supposed to know or see. He is being overly rude and crossing my lines... idk what to do...