Doctor does feel very guilty, very guilty about River. Well, you know, he has to watch her die. To watch someone like that, who’s clearly going to be someone important throughout the course of his time stream, in different ways, we don’t know how, he doesn’t know how, but he has an inkling - he has an inkling about everything, but yeah, that hurts him. And he hates losing people he loves. And River is one of them. For sure. [Matt Smith]
This is so well done! Also one of my favorite interviews with Matt.