@LadyEloise There's a ridiculous fictional novel in the cock-buster genre that is a thinly veiled fictionalised account of modern royal families. We've discussed it on here a few times. I didn't want to rehash old chat so OLD TIMERS, FEEL FREE TO SKIP THIS POST! 
But basically, in the book, one of the story lines is clearly around Albert and Charlene. In the book, she agrees to the wedding originally, I think IIRC, having been convinced that he really loves her etc etc. Then she finds out the truth that he's not nice at all and, I think, gay (it was a few years ago, the details are unclear) and tries to run. Only to basically be kidnapped and forced to marry him.
In the same book, Princess Diana faked her death and is living in luxury but mostly self isolation somewhere in the middle east (I think).
And there's a memorable, and disturbing sex scene with a banana, kate and william.... 
*Actually, I didn't read any more of the author's books after that. I started reading the next one but it just didn't sit right for some reason as the themes were just irritating and I hadn't liked the thinly veiled/real people thing of the royal book. Pity as I enjoy a good cock-buster as much as the next person usually!