Er, I hope I understand what you're trying to say...I should have specified more, instead of just referring to marriage into one's class across all classes. All classes follow this unspoken rule - I can't think of any exceptions off the top of my head - but to me, royal marriages
are distinguished from other class marriages, as there's enormous political consequence - the image and, thus, legitimacy of a dynasty is at stake. Hardly a good environment to develop healthy, intimate relationships.
I'd guess that all royals had an unconscious understanding of this; at the very least, Alexandra understood that royal marriages were distinguished from others. In Sergei Sazonov's memoir "Fateful Years," he recalls a conversation with Alexandra after proposing an alliance through marriage with Romania (the Olga-Karol match): "I recollect a conversation I once had on this subject with the Empress, on the terrace of the Palace of Livadia. ‘I think with terror,’ said the Empress, ‘that the time draws near when I shall have to part with my daughters. I could desire nothing better than that they should remain in Russia after their marriage. But I have four daughters, and it is, of course, impossible.
You know how difficult marriages are in reigning families. I know it by experience, although I was never in the position my daughters occupy, being the daughter of the Grand Duke of Hesse, and running little risk of being obliged to make a political match..."
For me, which I don't know if anyone will agree with me lol, I perfectly understand the
reasoning behind N&A to limit their childrens' + the rest of the Imperial Family's marriages. I know they weren't being intentionally mean, manipulative, etc. But, it's not an
excuse, because they were in the wrong. Their family members were pawns used to prop up the image of the Romanov dynasty, and thus, advance Russian imperialism. And I do feel that they are excused today. A major view of them in both the West (example: historians like Robert Massie) and the East (Russian orthodoxy, especially those in the extremely far political right) is the perfectly united, loving patriarchal family, which is 100% excusing that N&A were manipulating their children and confining them to highly restrictive roles for an Imperialist agenda.......the sanitized image of the Romanovs really kills me. :-(
Recently I was listening to an episode of Buzzfeed Unsolved (a mystery podcast haha) about Edgar Allen Poe, and they mentioned that he married his 13 year old cousin. One of the speakers was like "Welllll it's was a standard of the times" but the other said, funnily, "It's very easy to condemn from our point in history… so we do condemn! Wholeheartedly!" That made me laugh, but I also think it's a good mindset. Here's the clip just for fun:
https://www.youtube.com/watch?v=y4DTW4B3Sjs&feature=youtu.be&t=292