Nothing like this will ever be easy or decided in an instant. A close friend of mine once categorized these types of decisions as "choices no one should ever have to make."
Once you're faced with them, you learn something new about yourself and no one can prepare you for it. I find comfort more in the fact that a decision is made rather than dwelling on the consequences because life is just too precious to be spent on resentment and regret. Sometimes, just having a decision made can be the best possible outcome...