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Let time pass while also allowing yourself to heal. Try your best to limit interaction with them, that makes it SO much harder. People always cut them out completely, but that's hard to do as well. I tried to move on while still conversing with my ex, which wasn't going very well. Even though we both agreed to stay friends. It just doesn't work out that way.
Focus your time and energy into your job, school, family/friends and social life. Get into martial arts, join a gym. Does something that you enjoy. Something that will make you laugh and genuinely feel happy. Don't try to find a new relationship because you will start to put your emotions into this person and that can end negatively. You want to heal your heart, not hurt it even more.