I can forgive but I cannot forget is only another way of saying I will not forgive. Forgiveness ought to be like a cancelled note - torn in two and burned up so that it never can be shown against one.
I think all women have a friend who at some point dumped them or betrayed them or deeply disappointed them. And at the same time all women have a friend who they dumped or betrayed or hurt in some way. That's universal in women's friendships.