Who knows what could have happened with Nunnaly had Lelouch treated her differently during the first video conference. But he did what he did with all of his old allies: Pushed her away as far as he could. Despite all his public speeches it seems somewhat likely he made quite an unholy pact with Suzaku and is heading down a dim road for himself, though likely better for the rest of the world. I wonder if Kallen will learn his plan or if she simply can't kill him for old times sake. Seeing how we are running out of episodes, either could happen, I suppose, depending on when and how they intend to reveal what Lelouch and Suzaku specifically aim for.