I hate my ex and want him to die?

Okay so i know that sounds horrible and cruel...but hear me out. My shitty ex boyfriend dumped me a month ago over the phone and he treated me like absolute shit the whole relationship and just broke my fucking heart when all I did was love him and give him everything. He was an asshole and he hurt me multiple times and didn't even care. I just really want him to die and wish I could beat the shit out of him for the pain he caused me. I know it wouldn't be right (and illegal) but I just hate him so much and find myself praying to God that he'll die and just hoping that bad things will happen to him. How can I get over this? It's been a month now I feel like I should be over him by now but I'm not :(