I think Peter has forgiven Cole because after beating up Cole Peter is then hugged by Cole, Peter does nothing to pull away from Cole. This simbolizes that Peter trusts Cole and that he no longer labels him as dangerous. After being able to trust Cole, Peter after does everything Cole does daily with him, this shows that there is a friendly bond between them. Peter then is able to feel sympathy for Cole when Cole is hugging at his ribs from the pain of the kicking. All these traits add up to a changed Peter that seems to understand why Cole did what he did and also Peter learned that anger is not forgottrn only controlled, just like
