Arwen was rather surprised but thought that this Time Lord was pretty cool. "That's awesome!" turning her head from the Doctor to Harkness. "You never told me that you traveled through space and time." 
Jack laughed a little but felt a little guilty. "Oops. Guess I'll tell you some stories some other time. I say when we get to the mall, we eat. I kinda spaced that both the Doctor and I havent eaten yet." Chuckling nervously, he hated forgetting things like that, however he was going to make up for it. "Pizza?"