I love this scene. Zoe talking to Wade and pretending to be happy for him, when he told her he was moving to Atlanta. When really, the thought of it was killing her.
That was the moment Zoe realized the pain of facing a future without Wade and the thought of losing him for good, outweighed any pain and hurt she was still holding onto from their past. The moment her walls truly came tumbling down. She truly loved him, as much as he loved her, even though she had been pretending she didn't and she had truly forgiven him, even though she didn't want too. She didn't have to say any of that out loud for anyone to hear either, because her eyes/face when she was looking at him in that moment, said it all.