"ROSE!" The Doctor screamed desperately. "Rose! Rose. Why?!"
His first companion after the Time War had just been lost to the parallel universe.
The Doctor lay there despondently on the ground, grieving. He slowly pulled himself up and dragged his defeated body down the hundreds of stairs.
The Doctor lingered at the bottom for a spell, and then went on his way, back to the only home he had left, the TARDIS.
"Home, sweet home, eh, old girl?" The Doctor sighed. The TARDIS gave a depressed hum. He went over and slumped on the jump seat, picking at a thread on his suit jacket.
After sitting there for a bit, the Time Lord suddenly jumped up and yelled, "Allons-y!" rushing around the console, pressing buttons, flicking switches, and pulling levers.
"I can talk to her for about two minutes if I use the energy from a dying sun to jump start my image through a miniscule crack in the universes!" Filled with hope of seeing his Rose one more time, he enthusiastically jumped around the console and pulled the view screen around to where he could see it.
"Rose Tyler."
A tear ran down the last Time Lord's face.
"I love you."
He couldn't sleep that night. Nightmares came, about his past lives.
The Oncoming Storm thrashed about, and then woke up with a gasp.
'I guess I won't be sleeping anymore tonight. Thank Rassailon I'm a Time Lord.'
The Doctor hauled himself out of bed and walked down the hallway, back to the console room. The TARDIS hummed in greeting. The Doctor set the controls to London, England, 2006. Canary Wharf. He held on tightly to the console while the ship shook violently.
He would come back to that spot, once every year. The Doctor would drop his current companion off somewhere, promise to come back, and then go pay his dues to the Wolf. He would sit there, cry a bit, then return to the person he had dropped off and continue traveling. He never told them where he went, no, they wouldn't understand.
The Doctor was broken.
After the Meta-crisis incident, the Doctor would convince himself that it had been necessary. Rose would be happier with someone she could grow old with. But, as he wished for her to be next to him, he slowly sank deeper into the pits of depression.
Yes, the Moment had said the Eleventh Doctor was 'The Man Who Forgets', but that wasn't entirely true. He remembered Rose. It all really hit him when River showed up, though. He didn't really love her, but instead put up a façade in order not to hurt anyone. He married her to save the universe, yes, but not for love.
He had hurt too many people, too many times; just as he had been hurt my too many people, too many times.
As the Doctor dematerialized from leaving Clara, he felt he had had enough. Clara just couldn't accept that he had changed. She might have loved his past body, but he had never loved her. He had never stopped loving Rose. And as his old, old shoulders slumped in defeat, the TARDIS knew this was the end. "Goodbye, Rose," the now old man whispered, as he closed his eyes for the last time.