.you must be mad, or else you wouldn't have come here

But with Ten, her relationship sort of dissolved into this soppy romance thing, with a lot less of the spark it had when he was Nine.
Exactly. I think it diminished her character in so many ways.

& a sidebar to that episode: I HATED Sarah Jane calling the Doctor's new companion 'his new assistant' - I think it was kind of out-of-character for her. She'd have spoke up if someone called her that back when SHE was a companion, so why would she call Rose that?
Actually, back in Three's era she was sort of his assistant and didn't flinch at the mentioning of it - I think it was the status ultimately given to her by the Brig in order to allow her permission to visit the facilities when she so wished, and to stop the top brass at Geneva to assign a new, unwanted assistant to Three. Of course, I don't know for certain so don't quote me on this. Anyway, since companions were better known as assistents at the time (mostly because that's the occupation Liz and Jo had at UNIT, which is why I've built this theory about Sarah Jane having that in her UNIT record as well) I didn't find it at all surprising that Sarah Jane would call Rose an assistant.

I haven't watched it in so long, so forgive my ignorance, but how DID Ten & Rose behave that bothered you so?
Mostly, it was the fact that they were clearly so excited and amused with everything that was happening around them even though people were dying. I could relate to the Queen's frustration, as she was concerned with the EFFING BIG WEREWOLF trying to murder the lot of them, and those two strangers were so giggly and more concerned with trying to make her say "We are not amused" than in the people dying all around them.

& WHOA, WHOA, WAIT A MINUTE - THAT WAS PAULINE COLLINS AS QUEEN VICTORIA?
It was her, yes. I let out a large squee when I realized it - which, I'm ashamed to say, only happened when I saw her credits in the closing credits; I'm more used to seeing her as an Edwardian trollop maid in Upstairs Downstairs.

also, he was in an episode of Secret Diary of A Call Girl as - you guessed it - someone Belle sleeps with, but he isn't a client of hers, just a one night stand.)
*sighs* I think almost all male actors from New Who must have slept with Belle in that show.
Also, it seems that my mental image of Fitz, Callum Blue, was also part of the list - he was Belle's boyfriend.