I’m not going to argue w custom, because it has been around far longer than I have.
But, by the same Fairytale logic she has the *right* to believe that the Man standing in front of her will always be able to provide for her every need.
What is she going to do when she realizes he has a fault, feel betrayed?
My issue here is that if someone EXPECTS a real diamond, or feels slighted when they dont receive one, they are simply not ready for a real relationship.