Most Helpful Girl
Let go of any hope that your ex will get back in touch with you and give you some kind of closure.
Holding onto hopes like that, that your ex will contact you and not only apologize, taking all the blame on themselves, but that this will somehow make you feel better, isn't reality. That's a destructive thought and the sooner you can close the book on this relationship and hopes of rekindling it, the better.
Most Helpful Guy
Cut contact from that person aka block them if you want nothing to do with them. Find something else to do with your time like hobbies you enjoy. Wait for the next girl to come along.