The title for 7.13 "I'd rather be in Philadelphia"
only spec.:

Is it possible that Luke will say it?

In the end of 7.08 he saw the movie "The Philadelphia Story" at the hospital.
We could see that this movie let him think about Lorelai.
Now both are in the hospital, Lorelai for her father and Luke?, what is if Luke is thinking about this movie( for what reason ever, maybe there is a situation that let him think about this movie) and he'll say that he would rather be in Philadelphia than here at the hospital.
Lorelai would look at him a little bit confused with a big ? on her face and Luke will say it's because of the movie.
What movie? Lorelai ask
The Philadelphia Story, Luke answered
and they split.
Than we'll see Lorelai at the video store to check out the story behind the movie "The Philadelphia Story" and she'll know what Luke was saying.