What makes for a good marriage? It is not enough to like your spouse. It is not enough to love her. The partners must also admire one another. There has to be some attribute in your spouse that you don't find in yourself (or not in the same measure) and that you aspire to possess or possess more fully. Must I add that we are not talking mainly about physical attributes?
What is admiration?
To love is not to admire. If God exists, he loves us. But he certainly doesn't admire us. For what does he lack? He doesn't aspire to possess any attribute that we have and that he lacks. Closer to the ground, one can easily love a sentient being, whether animal or human, without admiration.
To value is not to admire. Prudence is a valuable attribute; so if you are prudent, I will value you in respect of your prudence; but if I am as prudent as you, then I don't admire you in respect of your prudence. Admiration is for attributes the admirer does not possess, or does not possess in the measure the admired possesses them.
To respect is not to admire. I can and ethically must respect the rights of those who are inferior to me in respect of admirable attributes.
My suggestion, then, is that a necessary though not sufficient condition of a good marriage is that it be a two-membered mutual admiration society.