This is just a little one-shot that I came up with a while ago.
I hope you like it
As always I do not own Castle. Oh I wish!

She felt warm. Really warm. She couldn't tell where it was coming from. It was surrounding her and she enjoyed it. She wormed her way into the warmth and she sighed contently. It moved, the warmth moved, she was confused. Why? She could feel her neck getting slightly warmer than the rest of her. Wait, what the hell was going on. Her eyes flickered open and someone was kissing her neck. Someone had their lips attached to her neck, placing sweet kisses along there, up and down her jawbone, behind her ear and it felt so good. She was so sure she went to sleep alone the night before, or did she. She was so tired she didn't even know what was going on. Oh God! That felt good, whoever was nipping at her ear managed to elicit a deep sensual moan from her, so she decided to turn around to face her attacker. She was prepared for the worst but not for this.

She found herself staring into the bright blue orbs of Richard Castle. Before she knew it, her lips were pressed against his and she lost her complete train of thought. His tongue quickly sneaked its way past her lips to taste her. All she could do is moan and fight back. They stayed like that, tongues duelling for dominance, when they both decided it was time for air, they separated. In all honesty, she was a bit breathless, and so was he.

'Hmmm I could get used to being woken up to like that Rick.'
He stared at her and after a second, moved his lips to her exposed neck. She moaned loudly when he bit her. She ground into him and he held onto her tighter. His tongue came out and soothed her bite.

'Last night was fun.'
'Ha. I'd say that was an understatement Rick.'
'Didn't you say, on our first case, that I'd have no idea? You were right. Even my fantasies couldn't live up to last night.'
'I told you so Ricky.' She chuckled lightly, 'so tell me about these fantasies Rick.' God she couldn't help but say his name over and over again. It just reminded her so much of the night before, and she didn't regret a thing.
'Hmm. I don't think I want to, not after last night.'
'Just one tiny, little fantasy. Please! If you do, I might be a good girl a play along.'
'Well, I have a variety of fantasies, Detective. Which one would you like to hear?'
'I don't know, surprise me.'

And with those words, she was living out one of Richard Castle's most played fantasies, and she wouldn't have it any other way.