How I love this:
“Your worst mistake was trusting me that much” –> “I never made a mistake by trusting someone so deep. Maybe, it is you who failed to see the goodness in you that make others have so much faith in”.
“You deserve better” –> “Man, I always have the best. You were one of the best I had that time. Too bad, you decided to leave. And I still have the best time of my life”.
“She’s better off without me” –> “I am. Thank you. Maybe it wasn’t the real reason you left. Maybe it was only a sad excuse you had. But, thank you. It came true. All my dreams come true, my life got better. Immediately, right after you left”.
That awesome moments when you can finally talk back negative words that were thrown at you with some positive words. =)