A princess must be very simple and must behave very well in public. Especially when it comes to a future Queen consort, she must follow all the rules very strictly. All the behaviors of a princess are dictated by the queen and this includes the gestures towards her husband, the Prince. It seems like a Prince and Princess are all about love no matter if they are in public or behind closed doors, but that is not how things are within the royal household. There is a rule pertaining to this and it has to be followed very seriously.
What if you were prohibited from kissing your partner in public? How would you feel? Imagine, at a moment of celebration or just to say goodbye, you are not allowed to hug or kiss your husband/wife in public. This is what Kate’s life looks like! The Queen finds public displays of affection unacceptable. As you know, if the queen doesn’t like it, then it’s not allowed. It is unlikely that a photographer could record a moment of intimacy between Kate and Prince William ever, because they are required to follow this rule very strictly. By rule, the couple shouldn’t even be seen holding hands. Affection is allowed only behind closed doors.