A little Ten/Rose drabble I wrote after catching up on season 4. Late and there is probably already a million version of this, but here it is. (Not beta-read, needs some readjustments)
He is jealous of himself. It's a strange feeling. But he let go of Rose to him, literally himself and it's painful.
It's the curse of a Time Lord, he knows it. He will live for ever and ever. And for ever and ever he will see death. He will part of cherished ones.
He knows she has left for him, a human version of the doctor she loves. He knows she will be happy, but it's not enough. For never he will touch her again. For never he will brush his fingers on her lips. He had a great big adventure with her and it had already ended once. They had parted but with no ending, with no real finality. But it's different now, because she has her final and he hasn't. He is just empty.
She has accompanied him. She has helped him. She has saved him and yet… He is alone now.
He has always been afraid of this feelings, of the too human emotions for the Last of the Time Lords. He hates the Daleks for their lack of emotions, he hates himself for lacking at showing them.
She knows it, but she will never hear it from his two-hearted self.
"Rose Tyler, I love you."
It sounds desperate and sad in the echoes of an empty TARDIS.