Some people compare all the companions to Rose or Sarah Jane . But every companion the has ever been, and will ever be, will always have to compete with Donna Noble for my love. Ten is my Doctor. Donna is my companion. End of story.
That awkward moment when basically the entire series is spoiled for you before you even get to watch any of it and so you could see the early foreshadow. Which made it hurt worse. --- Ah foreshadowing.
I can& even watch this part of the episode. I turn it off right as Donna and the Doctor get into the TARDIS on the beach at Badwolf. Rose has TenToo and the DoctorDonna and Ten are off to party in the universe. Everyone happy.