Yes, what they said

And “boring” was always insult of choice for XAH towards me, along with many other things.

I now realize that he is the boring one, has no hobbies or friends, and never does anything, even though he is now not “burdened” with child rearing responsibilities and only works two days a week.

I am 100% sure you are not boring. Let him have fun with all the fun tinder girls (no offense to tinder as I have used it before)