Never get jealous when you see your ex with someone else, because our parents taught us to give our used toys to the less fortunate. Yup, i need to remember that. Don't worry Katie, you'll find out soon enough that you are the less fortunate now.
And maybe a happy ending doesn't include a guy, 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.