If there were such a way out everyone would want to use it. No one likes disappointing or hurting someone else. There do not have to be reasons for the ending of a relationship. Things evolve. Things change. The sun rises and the sun sets. The matter can be discussed. More time and effort may be agreed. What seems like a terminal decline may be just a valley. Occasionally, blame and reasons end relationships. More often it is just change and changed needs.