Ex boyfriend

My ex boyfriend broke up with me while he was in a different country and I didn’t even know he had left. This was a few months ago in like February i believe and he pulled a lot of stunts that just completely scares, confuses and worries me. Recently he posted on his snapchat saying my ex is disgusting, hairy, etc. So I blocked him but he messaged me today and I haven’t talk to him since but I think about him every day I don’t know what to do or how to move on