If I had to describe all the relationships in my story with a single song, it would be:
It's a love song, but it can also be interpreted to be a song about all types of positive relationships. I have characters who bonded because of being bullied together, uncomfortable family lives, trauma, and sometimes just pure admiration.
Sometimes those feelings can be unhealthy and borderline obsessive, while other times they can help aid in the emotional healing process. It just depends.
Either way, life goes on, right?