Just wanted you to know that I can relate to your feelings. I think it'd be easier to lose a loved one to death, than to lose one by having them leave...especially when they have cheated and lied. They also rewrite history, and convince themselves that things are other than what they are...in order to justify their actions. If you lose someone to death, at least you know that they cared about you when they died, and you don't have to deal with the other things I mentioned and the emotions that accompany them. It's unreal that some people can become so heartless...and enable themselves to not have a conscience anymore. I'm sorry you're having to go through this. You are not alone.
"Always go straight forward, and if you meet the devil, cut him in two and go between the pieces." - William Sturgis, clipper ship captain, 1830's.