NONE of that gives any credibility to what Spencer has said.
Yes, the marriage was doomed.
And for reasons it's clear to understand with hindsight.
It was a very unfortunate marriage - in essence an arranged marriage.
Charles was under huge pressure to marry.
If you weren't a mature adult then you won't have lived through his romances and the enormous pressure from his parents to find the right bride.
It was a mistake.
You could argue that Diana's behaviour where she slept with numerous men, many married, was not good behaviour and for her sons to be subjected to that very public behaviour was damaging.
At least Charles has been faithful in effect to one woman.
That doesn't mean the King said those things.
I was well into my 30s when Diana died.
I saw the way Charles behaved when she died. Anyone who saw him arrive on the tarmac, leaving the plane, after going to identify her body would know he looked a broken man.