hi FriendlyMan, and

it sounds like there is a great deal of resentment in your marriage, and there has been for a long time.
it also sounds like the there is still love between the two of you, but some fear of being vulnerable.
its hard to break the cycle...to get on a better trajectory. but it is possible, and there is hope.
can you have a read of this, and tell us what stage it feels like your relationship is in:
https://bpdfamily.com/content/your-relationship-breaking-down