Richard Castle felt gobsmacked, flabbergasted or even just surprised.
Usually he could come up with better synonyms but at the moment, sitting at his desk staring at his laptop, he couldn't think of enough of them to get across the feeling of being totally stunned at the results of a Google search.
As slow days went this one had the potential to turn into the quickest on record, and it could even end up with his metaphorical death. If Kate were to see the results of such a simple Google search he was sure to end up with his ear in agony at least, of course if he didn't mention it and she later found out that he knew… well he'd probably get a beating if not shot on sight. Comparatively speaking that would be a lot worse. There was really only one thing he could do.
Castle left his office, and his loft, heading towards the 12th precinct and towards what was sure to be a very interesting afternoon.
You certainly couldn't call it a slow day any more.

Kate Beckett sat at her desk, bored out of her mind and trying to stop herself from hoping for a murder just to pass the time. She'd actually finished her paperwork, and although she'd found it a nice variation not to have Castle staring at her for most of the day, that had changed once she got bored. He was a great distraction at times like this and she did miss the coffee. Deciding that the machine in the break room was a good enough replacement for now she picked up her new mug, emblazoned with the phrase "I am not Nikki Heat" and headed for the break room. The prospect of a wonderful caffeine buzz driving her actions she started the machine; drowning out the sound of the elevator announcing its arrival.

Castle knew where Kate was without even thinking about it, like some sort of Jedi mind trick, and he was considerably pleased with himself for having such a gift. Of course shadowing her for over 4 years did help in knowing the two most likely places she was going to be. Noticing her desk empty he headed straight to the break room and wasn't disappointed.
Trying to be quiet he walked softly to where she was peering at the coffee machine.

"Hey Castle" She said before he got within a foot, turning with a grin as she heard him jump her smile widened as she noticed the takeout coffee cup in his hand,
"You are a lifesaver, don't ever let it be said I don't appreciate your coffee timing"

"Least I can do" Trying not to sound nervous and failing horribly, Castle handed over the coffee and reached to put away her mug that now lay abandoned under the fancy machine.
"Do you have a second; I need to ask you something"

From experience Kate was already expecting something horrific.
It didn't help when he sat in his usual chair by her desk and waited till he had her full attention before beginning.
This didn't look good.

"You know that if I could get rid of the unwanted press attention you've received, from being associated with me, I'd do that in the blink of an eye don't you?" at her nod he continued
"…and if you got any heat from the press, no pun intended, that was hurtful or untruthful or just plain incorrect I'd do anything in my power to fix that…."

He paused to try and gauge her mood.

"Get on with it Castle, what have you done?"

Guessing she was a bit anxious he ploughed on, figuring the news was like a band aid that needed a swift pull he blurted it out
"My fans have become your fans and...they'vecreatedawebsiteinyourhonour"
Castle had closed his eyes while he blurted out the last part of his sentence, holding up his hands in surrender and to hopefully ward off any impending attack, but as he stood there, seconds seem to stretch; he didn't seem to be getting the reaction he'd feared.