I thought we were friends

It’s not as if you could ever understand
How I feel means nothing to you
You said you care
You said you would always be there, with that fake smile on your face
I trusted you; I thought I could believe everything you say
But when I need you, you were never there

How could I have been as stupid as to letting you stab me in the back?
I thought you were my friend but you only used me
I did everything you said, because we were like sisters
How could you kick me aside like I was nothing?
You just pushed me away and left me alone to cry

Now I’m always alone
All I do now is watch you laugh with your new friends
And every time I’m alone at home
I would lock myself in my room and plan my revenge