You should always forgive someone that is sorry and regretful.
Dave and Joanne finish an argument when Joanne apologizes to Dave and asks if he accepts her apology.
Dave wants to respond to Joanne's question.
Dave tells Joanne that he's OK and that he forgives her since she apologized so profusely.
Dave tells Joanne that he does not as she hurt him very badly, and he just can't bring himself to get over it yet.
Joanne is relieved that they can both move on from  the incident and is happy things are back to normal.
Joanne feels vulnerable and confused as she just gave a proper apology to Dave for what she had done.