The Five of Swords is an invitation to analyse a break-up of some kind. Try to work out what you could have done to avoid it, if anything, and how you feel about the words and actions of yourself and the other injured party. What could possibly have been gained from the fight? What are the lessons and do you feel justified in your feelings? The relationship between two people is like a venn diagram. The individuals are the spheres intercepting and the piece of them that joins is what they've made together -the connection and what it means- but the rest of them is still completely individual and that struggle to maintain personal identity and consider the other's needs can feel incredibly demanding when your heart's not in it anymore.
I've also always believed that this card has a message for the mediator in a conflict situation. If you're the one who's holding a friendship together by being the go-between while the others seemingly attempt to destroy it with callous actions or harsh words, this card is telling you that there's nothing more you can do and that you have to let them have their battle in order that it be settled. Don't take on any guilt for other people's acts of carelessness or aggression. And if you're in the middle of a conflict, this card might be asking you to consider the impact it's having on those who might have secondary roles or are being asked to choose a side.
This card speaks more about what has been permanently destroyed than it does about things that can be salvaged or explained away. It's about accepting when something has died its cruel death and preparing to move forward, away from the fray and towards peace and harmony.