Originally Posted by DenWatts:
“I put that observation in as a one-liner on purpose, because I think it's hugely significant.
Rose loves the Doctor, the Doctor loves her (she KNEW he'd be back, even though he took the Tardis key off her and stormed off - did you see her smile when he came running back to find her, and the self-satisfied look on her face?)
This IS a love-story after all - something that RTD does so well, whatever the circumstances and situation he sets it in.
Rose will help the Doctor grow as much as he's helped her. She will indeed be his key!”
I'm trying desperately to avoid a crass joke about his key and her Tardis
But I agree - this series has definitely been a love story of sorts. I can only imagine how jealous the Doctor will be when Rose gets swept off her feet by Captain Jack next week

. But I'm actually beginning to wonder how Rose will react to a new Doctor - she feels so deeply about this one, so his next regeneration should prove to be very interesting. Almost like starting over, I guess - not only will we have to get to know a new Doctor, but we'll have to get to know Rose's relationship with him too.