The Weight of Remembering

What if he could finally tell her the words hung on the tip of his tongue for so long?
Be selfish, for once. Bring her back.
But then, reality settled in again. The image of Rose in his duplicate's arms flashed in his mind.
The human Doctor, his mirrored image, yet the man he could never be.
"I'm sorry, Rose," he whispered, "I've got to let you go."

--

After leaving Rose forever in the parallel universe, the Doctor and Donna fly away in the TARDIS, only for it to crash into the Regency era, seemingly caused by a time crack that leaves them stranded. Forced to investigate, they meet Rosemary Tyler, identical to Rose but with no memory of them. To uncover whether she is their Rose or another version, the Doctor must get closer to her; however, Regency society's strict customs leave him no choice but to formally court her, a task made even more difficult when he discovers she is already being pursued by another mysterious man.

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