What went wrong? by bash

You were my only one!
I loved you until the word was gone!
I loved you and I didn't hurt you.
I fought for you and I never let you go.

All the sweetest words you say to me
All your words that said "Promise me"
But now, why can't I see?
For you, I don't know if you love me,

If the day comes that I will never be able to see you,
I don't know what I'll do,
 Now you can't appreciate me
Not even you're sorry.

Why can't you care for me now?
Don't you love me?
I guess you don't love me anymore
 because you changed... a lot
I just need to ask you before this day will end
What went wrong?