Should I get back together with my ex?

Sitting at work thinking about what has happened over the past year. Thinking about the good times and the bad. Unanswered questions. Can people change for the better. Does the good times outweigh the bad times or is it visa versa. I know some bar things have happened which has cost a lot of money but why does my heart think otherwise i tell myself I have to move on yet my heart is doing it's best not to and it's making everything really hard. If you ask me do I miss her and do I still love her, to be completely honest I would have to say yes I do. I always will. But how can we do a round 3. No one would approve of it but should I let that matter when it comes to my own heart. Dam it's hard. I don't know if I could turn her away if she was standing infront of me right now