Hmm... I do think that I have this problem as well. If someone does something bad to me, I don't get mad. However, I never forget. I won't bring it up or say anything about it and I am somewhat able to forgive, but I never really forget.
Things like my dad abandoning my family when I was 13... I'm not angry about it, but I haven't forgiven him. I still don't feel comfortable talking to him. Abusive things my mother has done, I don't talk about it but I remember. I'm not angry, but it still hurts thinking about it.