"I know," he said. "There's two of me, and we both love her. Believe it or not, it's more complicated than sorting out you and me and Joan and everything else. But ... " Here, his tone became gentler. " ... I shouldn't blame you for not realizing. How could you have known? She was just a story to you, wasn't she?"
The Doctor sighed and ran his hands through his hair. "Look. We're not going to solve all of our problems overnight, you and me, so why don't we at least come to an agreement? You try to find a way to make this work, and so will I. I know you don't see what's happened as an opportunity, but it can be, if you would just let it be."