What should I do with my best friend?

Because he posted too many comments about me that are not true on facebook. He called me names like Francewa,George,Drama King,Powerpuff,and also Stupid. I know he was trying to apologize to me but he keeps repeating it for 40 times and I blocked him and deleted him off of facebook. I just don't know what do to anymore. We've known each other since middle school (6th grade) and were both Special needs students he has ADHD and I have autism. I just feel my life is going to be extra tough for me to live like this. (I'm 14 years old in the 9th grade and my best friend is 16 years old in the same grade as me). Plz help me!