If you want to be in a happy long-term relationship or even a marriage, ask yourself this simple question. And it's from musician Nick Cave. He described marriage as a "immense release from the burden of life being about just myself."

What he means is that the question you should ask yourself in a long-term relationship or even a marriage is whether you are willing to commit completely to that other person?

Are you willing to admit that your fate has now become a shared fate? That your destiny has become a shared destiny, that the path you take in life is no longer one you take alone.

The question you must ask yourself is this person someone I want to spend more time with?

Do I care enough about this person to want their fate to be intertwined with mine?

One soul, two people.