This article in The Independent has an interesting tidbit about season 2...
"Stephen Moffat has written what is practically a love story for the Doctor in episode four. That's never been seen. It's very understated,
very beautifully done, but it's nonetheless a Time Lord falling in love and Rose's reaction to him falling in love with someone else."
*hopes, prematurely, that this ep and School Reunion will both inspire fic*