<human>: Could you distill the essence of the text into 1-3 sentences?

We dated for a year and a half. I broke up with him a few weeks ago. He took it horribly. I thought he would be ok after a little bit and we would friends again (we were good friends before). 

Instead he gets really drunk and hits on my friends at parties, calls me some awful names, and tells mutual friends not to talk to me. Also he has been asking around about me, gathering knowledge about what is happening in my life. And he is way too friendly with my friends - like he will walk up to them and chat and invite them to things. Just kind of weird behavior, as I have been staying away from his friends to give him space. 

So is it childish to unfriend him on social media? I don't want to come off as petty, but he makes me uncomfortable. I really miss my friend  (but man am I glad we are not dating anymore) but this behavior is pretty upsetting to me. I don't think he is going to get over it or that we are going to be friends again. I don't want him to see what is happening in my life and I REALLY don't want to see him anytime I open my facebook/get notifications about My Story on Snapchat. I am afraid that by deleting him that will give him some sort of satisfaction - like a self fulfilling prophecy about the names he has been calling me.
<bot>: Ex is acting weird with my friends and is making me uncomfortable after I dumped him. I don't think we are going to be able to be friends again. Is it bad to delete him on my social media?