I voted for Wilhem-Alexander and Maxima! Thry seem very down-to-earth and such a real couple! If I had to make a comparison between ordinary lovers and thr royal one I would choose them because they seem like just like every commoner's love story!
Felipe and Letizia. Your serious way of being in official acts and the history of your relationship.
I also like Frederik and Mary and the Prince and Princess of Wales.