I use to have a Best Friend:(

I use to have a best friend,
But now someone has stolen my friend.
I use to tell her everything,
But now I'm silent constantly.
I use to cry in front of her,
But now a tear is shed because of her.
I use to laugh with her,
But now I no longer laugh without her.
I use to say she was my sister,
But now I wish I never met her.
I use to help her through her problems,
But now I'm the least of her problems.
I use to have a best friend,
But now I have to realize that this is "SO LONG MY BEST FRIEND".