This isn't fair

A regular teenage story as it seems. Many people love and lose but for Rebecca it's another story. Her love since elementary school moved away. She keeps the relationship going as long as she can without a break up but we all know that's inevitable. When they finally break up and he moves on, how would you respond? A story of love and compassion but a thrilling mystery of what happened to Alex.
This is my first story. Please comment what I can do to help my story. That would help so much! Thanks.