Answer:
You can write about the following below:
1. How to get over grief - the idea of accepting grief is really how you overcome it
2. How a broken heart in a relationship effects someone’s emotions and actions - this could be a good topic for more of a research and data essay
3. You can tell the story of someone who’s high school crush left him/her for someone else that they hate - this would be one for a creative writing.
Hope these help!