Best Friends Forever, Right?

It was a friendship that I hoped had no end. Never in my life would I question its length. On the inside looking out, I thought that it was the best place for me. However now, on the outside looking in, I see how she poisoned my mind. Slowly and gradually making me feel inferior, then somehow twisting my thoughts so that I believed my misery was my own doing. At first, I cried when I realized that the friendship I had with her was ending. Now? Now I cry over all those wasted years I spent around her. I cry because I knew I should have gotten out, but didn't. I believed she would change. I believed she wouldn't hurt me. I believed she was my friend. I believed in her. But I was betrayed. I had a dagger plunged into my back. It tore me apart and left a scar I could never forget. Only then, after I was broken beyond repair, did I finally realize I had to let go. She wouldn't change. She was toxic, and I was dying.