Three things you cannot recover in life, the word, moment, time so choose, embrace and never waste time arguing over things that will not matter in the last 5 minutes of your life. Always remember this. It's not worth it to waste your life angry.
And maybe, for now, a happy ending doesnt include a relationship. Maybe it's you, on your own picking up the pieces and starting over, freeing yourself up for something better in the future. Maybe the happy ending is just moving on.