First of all I must point out that, because I'm a very conscientious commentator, I felt morally compelled to read Sunday again before reading the sequel.
*adopts a look of self-sacrifice*
And really you were morally compelled to write a sequel because you couldn't leave Sherlock in such trouble (yes, sometimes writing slash is a moral duty).

Well, that's hot, no wonder that brains are melting here and there. And it's funny too :
He is not sure what exactly he is hoping for, but he tries to spend every waking minute of John’s free day in the flat.
I picture Sherlock answering to Lestrade's phone call : "Er, no, sorry, I can't come now, John is awake and I must, er, be here."

I can't help noticing that Sherlock was stroking the armrest in Sunday and now he's gripping the headrest and pressing his groin against the armchair. Well, lucky furniture. :D

But how can you warn about voyeurism ? Naaaaah, that's healthy curiosity and longing to learn, very recommended in fact and most moral.

And aargh, the final line ! I see Verity's cliffhangers are infectious ! :D