Why should I care?

I had no one,
No one to go to,
I've been upset for days,
We were best friends,
I loved you,
You weren't there,
When I was scared,
I felt so alone,
If you don't care,
Why should I?
I cry out loud,
By myself,
No one there for me,
You weren't there,
When I was scared,
I was so alone,
I'm there for you,
You're not for me,
Am I invisible to you?
Why should I care?
Left to cry alone.

yes i know, i got the idea from the song