Man is born with certain innate fears, such as the fear of falling, the fear of the dark, the fear of lobsters . . . the fear of lobsters falling on him in the dark.
Point being, the fears that we spend so much brain energy worrying over are usually a load of crap. I relate that to my fear/hurt that my former in-laws just embraced the new wifey, aka OW, and I no longer count for s__t after 20 plus years of being there for them. My higher thinking knows that they are in as difficult a position as our children, and that they are trying to make the best of it, but the bad thoughts are still circling in the back of my mind looking for an opening to strike.
My in-laws recently resettled to be near XH, moving 350 miles to a town where they know no one but their son. I know that Dad wouldn't have done such if he didn't think he needed to be near him for one reason or another. Perhaps the blinder's are off.
All I do know, is that it will be harder than ever to hide his drinking, etc. with his Dad and brother both hanging around.