I thought Princess Eugenie and her husband to be seemed genuinely happy and very much in love. Good luck to them both. Who knows why some peoples marriages fail, it doesn't make any difference where you come from or who you are. Money and position doesn't make relationships automatically work, any more than relative poverty and insignificance automatically makes them fail.
Forgetting where you left your keys does not mean you are “losing it”
Harry and Meghan ‘royal’ tour of Nigeria.