Why do things continue as they do? None of us can be totally sure.
I often say things happen "for us" versus "to us." Well, there is this other possibility that exists as well. We may just be players in what is happening "for others."
The experiences you are going through may be more for your XH, than they are for you. You are connected to the experience, but we don't know fully what role you play in this particular situation.
Repeat this ten times. It's not about me. It's not about me.