Most Helpful Girl
In the same way you get over anything else, really. You can mourn for a little bit because it's obviously something life-changing and you should deal with the emotional aftermath of that. But at some point you just have to pick yourself up and not allow yourself to mope around. If you find yourself moping, take a walk to clear your head. Call a friend and ask if they can hang out or make plans. Watch your favorite movie. Seek support from family and friends. Get a new hobby. By keeping yourself occupied, you'll have other things to think about. Little by little your feelings will fade and you'll find yourself not missing your ex or mourning the relationship anymore.