Hello Friend, Good that you are seeking a help here. Any relationship failures will take time to accept and adjust. You must be going through the transition phase and better accept the decision of partner and move on.
Try to focus or divert your actions with studies, family or friends or hobbies.
Seek a counseling support if you're still not able to control the emotions.
Next Steps
Feel free to reach out to me online through Practo for further assistance.