They say hope dies last and maybe that's what you need right now, to kill that warm feeling that you will get back together with your ex. It sounds brutal and it is excruciating for sure. But, as soon as you accept your relationship has ended, you can start focusing on yourself again and stop obsessing about an aspect that you can no longer fix. Although you might not feel prepared to take this step, it would be good for you to at least go through a list of signs he will never come back. In this way, you will be able to change your mindset and start fresh.