One thing that has occurred to me watching Harry and Meghan over the past two years is that I definitely get the feeling that Meghan is the Yin to Harry's Yang. If he tends to get uptight and upset, she's his calming influence and sounding board. On the other hand, even though Meghan has had a full, independent single life and is capable of taking care of herself, Harry is very protective and attentive to his other half. I do think their relationship goes far beneath a superficial level because, as we've seen, during their courtship, they weren't partying and out to see and be seen but preferred the quiet times alone at home.
They're as different as the yolk and the white but together they make one good egg. They balance each other out, I think.
I think you've hit the nail on the head. ITV interviewed Tom Bradby before the wedding ceremony (he and his wife were guests), and apparently he was brought in to help with dealing with the media on this relationship. He said she has always remained calm about it and didn't understand why the fascination whereas Harry just always wanted to protect her and make everything ok and safe. He also said, in his opinion, Meghan really doesn't read whatever the tabloids are printing, or at least she only reads what she needs to (I'm assuming she's leaving it to KP staff and the lawyers to determine what she needs to be aware of and what is just jibberish that will pass).