Disclaimer: I don't own anything. But I wouldn't mind if I did.
Back in Beckett's car, the silence between them was uncomfortable. Castle was looking at the piece of paper he had been offered. Beckett was looking at him out of the corner of her eye.
'I don't know why the hell you accepted her number.' Beckett said, breaking the silence.
'What did you want me to do?'
'To say 'No, thanks', for instance?' Beckett said without looking at him, focused on the road.
'Wouldn't that be very suspicious? I mean, it would give her a reason to think I'm in a relationship.' he answered.
'Aren't you?' she spit out.
He stopped looking at the paper to keep it on his jacket pocket and look at her with a funny look in his eyes. 'Are you jealous?'
She braked in a very rough way in order not to skip the traffic light that suddenly had turned red. 'I'm not jealous.' she stated.
He forgot about the paper and played down its importance even he kept it on his pocket to get rid of it later. He stared looking at her with a smile on his mouth before saying:
'You're even sexier when you get jealous.'
After that, he got took off the safety belt, leaned in, got her face between his hands and pulled her towards him until their lips met in a quick kiss.
'And what about when I get angry? Because that's what you're gonna get if you kiss me at work.' She looked at him, who was back to his previous position. While he was fastening the belt again, their eyes met and he burst laughing. Soon she joined him.
'Green' he said pointing at the traffic light.
She put the car into reverse and headed to the 12th precinct. There, everyone started working on the case, filling Beckett's board, making calls to possible suspects to check alibis, informing Gates... Well, everyone collaborated until they forgot their watches and the clock struck 12 o'clock. Then, Beckett sent Ryan and Esposito home and got her jacket to do the same.
'Would you like to go out for a drink?' Castle asked.
She laughed before answering
'I would love to, but I'm sure it won't be just one. It will be two, maybe more and the last one will be at my place or yours. I have to be here tomorrow at eight o'clock in the morning. Sorry.'
'Maybe another day' he suggested as they were leading to the lift.
'Not maybe, definitely.' she said while she looked to make sure there was no one around.
'Are you still at work?' he asked just a second before the elevator doors closed.
'I'm officially done' Kate answered before rounding his neck with her arms and leaning in to kiss him. They pulled back when the structure emitted its characteristic sound and a second before doors opened wide. After that, they got out of the squared box like nothing happened and Beckett headed towards her car while Castle stopped a taxi. No one told them about what was about to happen between them.
AN: Please tell me if there's any mistake. English is not my mother language and my dictionary doesn't always solve my doubts, so I have to dispel them using online ones which are not very reliable. Sorry for the short length of this chapter. And thanks for reading!