I know you are spinning and your anxiety is throttled right now. I know how that feels and really struggled as well. You will get past this, I promise. It’s going to sting for a while but you will start to get stronger and stronger as time goes by.
I can also relate to how you feel about how your W has flip flopped and become someone you would have never expected her to be. I remember vividly feeling the same way and analyzing things until I was nearly insane.
Almost all of us here have experienced this, you are not alone.
Hang in there and do your best to try to get some sleep tonight.