Picture The Doctor, standing on a beach in Norway.
Picture, standing in front of him, her eyes red with tears that still fall thick and fast, the woman he loves.
Rose Tyler.
The Doctor opens his mouth to speak. His eyes are also red, but he contains his sorrow, knowing that this is his last chance to say goodbye.
"And I suppose, since it's my last chance to say it… Rose Tyler…"
He flickers as he opens his mouth to say those three small words that mean so much… and disappears.
Rose simply stands there as a fresh wave of grief waves over her. Her tears can no longer be contained and fall in a flurry to the ground. He is gone. Gone forever.
The Doctor, meanwhile, finds himself standing in his TARDIS, his mouth still forming his last words to her. His tears too fall thick and fast as he whispers the words, hoping she knows it…
"I love you."