"But such reactions arent governed by logic...they're much more primitive/primal in nature...the fight or flight response."
You know it actually sounds like you're building an insanity excuse for yourself. You're not a frickin' caveman or an animal. You have control over what you do or don't do.
knittedscarf is right. Are you seriously comparing your W's cheating to a rapist or a murderer? You got dumped. Get over it.
Stop pretending that it's all for morality's sake you're doing this. It's not like she's Saddam Hussein. She's a woman who didn't want to be with you any more and if you were like this when you were with her, it's not hard to see why she might have wanted out.
Bring up what you plan to do to your IC and see what he says.
M-43 W-40 2D - 9 and 5
Emotion, yet peace. Ignorance, yet knowledge. Passion, yet serenity. Chaos, yet harmony. Death, yet a new life.