DOCTOR: You lost someone.

ROGUE: How do you know that?

DOCTOR: Because I know.

ROGUE: There was... Yeah. We travelled together. We had fun, y'know? And then a day came along, and at the end of that day... I lost them. What about you?

DOCTOR: I lost everyone.

ROGUE: At the party, I saw you with that woman.

DOCTOR: Mmm. My best friend.

ROGUE: Do you ever wonder... why keep going?

DOCTOR: Because we have to. We have to live each day because they can't. You don't have to stay a bounty hunter, Rogue. You could travel with me. Oh, the worlds I could show you, Rogue.

ROGUE: And what if I like what I do? Would you travel with me?

DOCTOR: That is quite an argument. I'll tell you what. When we both get out of this, let's argue across the stars.

ROGUE: I'd like that.