“In most situations it can be disrespectful to put your hand on a man or a woman, if they are not related to you.”

It does not matter if he or she is royalty. A man should have respect for another man by not putting his hand on the man's wife/girlfriend. It is disrespectful. Which man likes another man to hug his wife/girlfriend, especially when they are being photographed? How would you feel when you look at the picture, your hand is not on your significant other, but another man’s (not even a relative) hand, is on her? It is damn disrespectful.