What are you supposed to do with spoiled memories?

What are you supposed to make of the happy times with the people who made you so unhappy? I have all these memories and flashbacks and in-jokes floating around my mind, with so many people I have loved and lost. I go back to a place where we laughed or kissed or had our first fight and the memories flood back, good and bad, and I don't know what to do with them.

I'm so tired of living in this city of ghosts.