Everybody lives, Rose! Just this once, everybody lives!
But in his dreams, they all die. Everything he touches, destroyed. Dead. Gallifrey, gone. Time Lords, burnt. And the countless stupid apes that have died because of him. Because he inspired them, or they got caught in the middle…
This is why he cannot have Rose.
Oh, he wants her. More than anything in the universe. But it would kill him to see her die. So if he must lose her to the pretty-boy (no longer) Captain to ensure her safety…
Then she seeks him out, mussed from sleep, shaking with night terrors, and rules be damned.
She's his, and no flirty conman is gonna steal her away.