You know, I don't think Martha will sulk. She's engaged to Tom Milligan (would have been nice to at least hear his name -- I loved their spark in "The Last of the Time Lords"), and she's all over the Doctor. Of course, it wouldn't be about the Doctor at this point, but more her wounded feelings of feeling second place to Rose constantly. So, yeah, we might get a moment or two of sulkiness -- from both -- which I hope leads to laughter as they realize how ridiculous it is now.

We'll see. I mean, it can't quite be like Rose and Sarah Jane, because at the time you could sorta say that the relationship that they each had with the Doctor was similar, but you just can't stretch that at all to say the same of Rose and Martha. So, yeah, we'll see.