Hawke and Beckett
Kate had to grin at that, tapping her fingers against the edge of her glass as Hawke spoke. With Castle, it was more of the same, he used her first name about as much as her last name, no matter what they were doing. "There was a time early in our partnership where Castle never called me anything but Beckett. I still remember the first time he used my given name."
It'd hadn't been a good moment for her. She'd been in trouble with her precinct captain and benched from the most important case of her police career - working on finding a contract killer who was also suspected of killing her mother. He'd used it to get her attention, to stop her from leaving and to try and encourage her to talk to him.
None of it had worked. She had still left. Stormed through the precinct and back to her apartment to lick her wounds and nurse her pride, but she remembered the sound of her first name passing through his lips for the first time.
"For a long time, I was only Kate if something serious was happening. Life or death situations, heavy emotional moments; that sort of thing. But when we got together he used it more and more. At home, I was mostly Kate after we got married, unless he was mad at me and then he'd revert back to Beckett." And at that memory, she grinned. A bright and full smile that showed two even rows of white teeth and put a sparkle of joy into her eyes. "But I mostly called him Castle, mostly as a habit thanks to work. I'd use Rick if I needed to get his attention or if I were talking to someone that might think it odd that I called him by his last name."
Shrugging her shoulders, Kate took another sip of her drink. "I am fine with that. Beckett and Hawke. We sound like we should be fighting crime. Or maybe lawyers."