Basically, she stole a guy from me.

I'm the kind of person that couldn't hurt a fly, but my days and nights are spent fantasizing about torturing her in the most painful ways. I hate her with every single part of me. I can't fathom how she had the nerve to do this, I can't fathom it. Who did she think she was? It's always the quiet ones that you never suspect. I spend every minute of every day hoping he cheats on her in the worst way, with a family member even. I hope even more that she gets run over or crushed by an escalator... anything.

I know this isn't healthy and I simply want to move on but I can't when hatred is eating away at me. I blocked her everywhere yet I still can't get her out of my mind (in a negative way of course). I just want to forget about her so I can be the happy carefree person I was before. How can I do this?

* It probably doesn't help that I still want him in my life, I'm not angry with him at all, just her. I think him and I could be really good friends but I absolutely do NOT want to hear anything about her. Do I have to cut contact with him as well?

Please help.