I had to extricate myself from a vicious emotionally abusive relationship with my best friend during college. We were so incredibly close and it was the best friendship I ever had, but the sicker she got (undiagnosed mental illness) the worse our relationship became. While I didn't hate her afterwards, I did harbor a lot of hurt and resentment towards her for things she had said and did to me and accused me of doing to her. I couldn't bear to think of her for years until one day I got an email from her apologizing for how things had turned out. I don't know what prompted the note, perhaps her therapist recommened it, but it opened a floodgate for me and I was finally able to forgive her and hope that she stays well. We will never be friends again, ever, but if we were to see each other out and about I would be able to stop and say hello without animosity and with a true caring for her well-being. That's the best I can hope for/offer her.
However, just last night I found myself losing yet another of my very few friends. We come from opposite sides on one particular subject, and rather than showing me the calm, constructive, courtesy that I have always tried to show her when discussing the subject, she lashed out and was incredibly rude and hurtful. It also showed me her true colors regarding this subject and how she perceives my opinions about it. As Mr. Darcy says: "My good opinion, once lost, is lost forever."
While the latter "friendship" may recover a bit, it will never be the same and I no longer trust her at all. I'm incredibly disappointed and hurt by this turn of events since I have few people in my life that I really considered friends and I thought she was one of the good ones.