If I forgive, will my memories now be good memories or will they always remain bad?
When we forgive, we do not forget. We tend to remember in new ways. If you decide to forgive, and when you look back, the memories may not be good in that you see goodness from all involved. You likely still will see unfairness and call it that. The big difference after you forgive is this: When you remember, you will do so with less pain and with more understanding. You still may experience some sadness because of what might have been, but the deep pain of resentment should diminish.
Learn more at Learning to Forgive Others.