What if - Eleven/Rose
Rose: Doctor, are you there?
Doctor: Rose?
Rose: Who is speaking?
Doctor: It’s me, Rose. The Doctor.
Rose: You can't be.
Doctor: Then how could I remember this? Very first word I ever said to you. Trapped in that cellar. Surrounded by shop window dummies... Oh such a long time ago. I took your hand and I said one word... just one word. I said 'run.’
Rose: Doctor.
Doctor: Hello, Rose Tyler.
Rose: Hello.
Doctor: But don't worry. I didn't change wherever we're in your timeline. I'm from the future.
Rose: How can you talk with your past?
Doctor: Oh you know, time is a big ball of wibbly wobbly timey wimey stuff... Very difficult to explain right now.
Rose: Are on your own?
Doctor: No, I've got good friends with me.
Rose: Good, you shouldn't be alone
Doctor: Rose?
Rose: Yeah?!
Doctor: I think you should remember that life is made of good and bad things; good things don't always soften the bad things, but the bad things don’t make good things unimportant. I’ve had pretty good things in my life, Rose. But you'll always be the best part of it.
Rose: Doctor I... I don't know what to say.
Doctor: You don't need to. I just want you to never give up on us. Ever.
Rose: I won't.
Doctor: I know.
Rose: Am I with you?
Doctor: You're always with me.
Rose: Doctor...
Doctor: Shhh. Rose, what I'm trying to say is... Rose Tyler I...
Rose: Doctor, are you there? Doctor?!
Doctor: Please, no...