So exactly what happened during this “big fight” between the Doctor and River that we heard about in The Caretaker, which led to him
sulking with otters for a month?One night, at the end of an
exciting adventure where they broke a space casino, and freed some
cruelly treated horses, she made a slight criticism of him, that was not
only true, but insightful, helpful and loving. He took it like a man.Steven Moffat in DWM485