Your interactions at work do not affect the infrastructure that defines your life.
You trusted W. W is betraying that trust by threatening to disassemble that foundation and forever alter the vision of what you thought your life was going to be.
We are more reactive when things that are closer to the core definition of our being are threatened.
If you do end up D, it will take time to redefine your life and rebuild the infrastructure. And when you do that - W will matter less and less, and you will react less and less.