Many stay in unsuitable relationships because they're afraid to cry; afraid that the relationship may be irreplaceable. Dear Ones, you are eternal beings and the deep grief of today is definitely something that will pass. It's merely the fleeting movement of a shadow across your path that will be viewed in retrospect as but a momentary pruning by life of that which is no longer part of your journey.
Nothing is irreplaceable. One cannot make a hole in the ocean. All of life will try and fill a hole left by loss with positive replacements. But the new steps in your journey won't manifest until you leave the past behind.