The idea that passion between people should continue for any longer than it does creates the illusion that something has gone wrong - and thus makes us suffer.
Whether one partner in the passionate exchange dies, the partnership collapses, or it becomes dispassionate - it is Right in that it paves the way for us to rekindle the flame of our inner passion in a state of greater awareness.
As we let go of wanting things to be different than they are right now, we can re-experience the feeling of passionate love within ourselves. And whatever feelings dominate our experience are made manifest in the physical form.
This is not to say that feeling of loss is not valid. Indeed, we must go through feelings of loss if we are move deeper into our passion.
But to recognize that none of the ideas that arise with the feeling of loss are actually the truth allows us to move into a renewed passion for what was, what is, and what can be.