I think you could say they had a tempestuous relationship! I remember bits of pieces of it all.
More on Marina, from 1997.
https://www.independent.co.uk/life-style/why-are-they-famous-marina-mowatt-1250406.html
I don't remember this.. but then I never paid attention to her after the wedding scandal. Marina tried to keep up getting press attention but after a couple of years, she faded out... and no one took any interest in her...