Russel T Davies: What Rose brings to the Doctors life is completion, between the two of them together they complete each other and discover each other and are in love with each other. Absolutely, unashamedly, unreservedly.
Steven Moffat: Obviously and quite overtly, really, the subtext of this show is that the Doctor is hopelessly in love with Rose.
John Barrowman: When he kisses her, it's not only the thing that he's wanted to do throughout the entire series, but it gives him peace because he's letting go of the burden of the Time Lords being destroyed and he's saving the one that he—he loved the Time Lords, they were his people—but he loves this girl.
David Tennant: The Doctor and Rose is, at its heart, a love story without the shagging.