<human>: I apologize, this is half (well, mostly) rant. The logical part of my brain says that I have to put this part first: I'm really just looking for breakup coping advice (how to continue to function) when you're on the side of the breaker. I know that it doesn't engender much sympathy, but I think we can both (eventually) be happier this way. 

I'm dying on the inside. After much deliberation with friends and family, I decided to end my relationship with my fiance (dating 4 years, engaged +1) yesterday. I love her dearly, but I knew that if I didn't end it now, it would have ended in the fires of divorce. She took it with a "that's it, then" attitude, and I feel totally haunted. I guess this is the core of why I wanted to break up - she has never been a fighter. And I just wanted so badly for her to fight for what she wants; I couldn't take the "sit back and let it happen" attitude anymore.

It's over now, and there's no undoing what's been done. She's off for the weekend with her friends, and the need inside of me to protect her from hurt is screaming out that it can do nothing, compounded with the sure and white-hot clarity that I'm the one who caused that pain. I'm pretty shattered. My head and my figurative heart are not exactly on speaking terms right now. 

How do you cope, knowing that you hurt somebody you love, when the knowledge that it was for the better of both you is an empty well? How do you put food in your mouth and go to work and handle the disbelief and the grief and the self-hate and all of this emotional garbage? I just want to cry, hoping that it will help a little, but I haven't been able to cry properly in almost a decade. The emotions won't manifest themselves physically, and I feel like even more like some kind of horrible emotionless non-human! :'(

Can you condense the text into a few key points?
<bot>: I broke up with my fiance and feel indescribably dreadful about it. How do I continue to do normal life things?