I understand the decision you have made. You are young and will recover completely from all this. The scars will eventually become hard earned character.
I want to encourage you to continue to relax about this. Even a divorce will take time.
Your husband is saying bizarre and hurtful things to you right now. There will come a time in the future when the brain chemistry he is being influenced by will fade. When that happens, he is going to revisit a lot of what he has said and done. It is going to be hard on him. After that happens, the relationship between him and the other woman will likely fail. Very few relationships starting from an affair make it long term. He really doesn't know what he is sacrificing to be with this woman.
What is really sad is that this woman is no more special than any other person on the planet. He is enamored with a 'feeling', not the woman. Very sad indeed.
Please keep us posted as things progress.
-NOPkins-
I will ferret out an affair at any opportunity.
-An affair is the embodiment of entitlement, fueled by resentment and lack of respect. -An infidel will remain unreachable so long as their sense of entitlement exceeds their ability to reason.