Is OTHER wrong in the post ? POST : A few months ago I broke up with my partner of two years. Lets call him Greg. It was not a smooth  break up  (as most go) and was sudden as I had begun to realize that I was not happy with the relationship. I started to notice reasons why we were not compatible and that we would fight a lot. I told my partner (Greg) these things and we followed it by fighting about our compatibility and whether or not we fight a lot (a very ironic fight)

 Following the break up I would receive up to ~20 messages a day about how I destroyed them and they wanted to hurt/kill themselves. Most of the messages were about how I was a selfish and awful human for breaking up with Greg (I can attach screenshots if requested).  I tried to help as much as I can, but it's difficult to be both the villain and the hero. So I started to reach out to his friends to ask them to be there for him. 

Currently the situation stands that I slept with my best friends ex (I very much know that IATA for this; it's not the point of the discussion). Their ex also happens to be acquaintances of Greg. My friend (ex friend?) posted the situation all over social media. So it's become a social issue. 

After word got out that I had slept with said human, Greg sent the following message to all of our mutual friends: 
 
""This message is for mutal friends of my ex,_____. It sucks I have to do this but _____ has recently displayed narcissistic and abusive tendencies within my friend group to a point that I can't ignore, my personal abuse aside. People are evidently objects to be used until she's done with them. I can explain further if nescessary, but I would reccomend cutting her out of your circle if you don't support abusive behavior. Sorry for the drama but I can't let this type of behavior within my circle. Thanks."" 

AITA? 

Tl;dr: I broke up with my partner and a few months later slept with my best friends ex. This resulted in /my/ ex sending a message to all our friends calling me abusive.