What's his problem?

I just need some help in figuring this out because I'm very confused..... I was dating a guy name jermal he is an Aquarius we stopped talking because I found out he had another girl he was dealing with afterwards we didn't speak again me and him are in the same group together called player lounge and trulife on Facebook and it's a group where we do meet and greets social, mingle etc.. Ever since we stopped speaking he makes subliminal comments and posts all the time to drive a reaction out of me but when I tried to speak to him to try to come to a common ground he asked me to stay on my side and he stay on his so now I don't show up to events when I know he is going to be there to avoid conflict but he is still carrying on with the subliminal messages and one day I finally gave in and I let him have it if he says it's over and done with then why is he still mentally messing with my mind I know I'm not crazy he always watches my posts I believe he even got other people involved in our business as well wuzup with this??

Sounds childish if he's still communicating through FB, agreed... cut him off at the ankles ... block him, find a new group, quick. Zero contact, dead to me.