A/N: We survived another week without Castle. So as a reward, here's chapter 2.

Happy CastleFanficMonday! :)

Disclaimer: I do not own Castle or the characters used in this story.

Hot and Cold

When Castle doesn't show up at the precinct Kate knows something is up. He never misses out on following her around unless he has to meet with Black Pawn or Alexis needs him, and even when he does, he texts her updates throughout the day. And ever since they started dating, the texts are longer, dirtier, and more frequent, though she's not complaining.

But it's nearing the end of her shift and she hasn't heard from him once. She considers calling Alexis to check on him, but tonight is movie night at the loft so she decides she'll find out what's up when she gets there.

An hour later she's knocking on his door, frowning when it remains closed for far longer than it should and she's about to pull out her phone when a bright, swirling whirl of colors that can only be described as Martha throws the door open and almost knocks her over in her hasty retreat out the door.

"Oh, Katherine, I'm so sorry I didn't know you were out here."

"Martha, is everything okay? I haven't heard from Rick all day and I knocked several times, I didn't think anyone was home."

"Richard has been in bed all day, claims he has a migraine but I think it's because he stayed up all night writing. You know how he is when the inspiration hits…"

Kate frowns, wondering why he didn't just text and tell her that. "Well, I'm glad he's okay. It's not like him to go completely off the radar."

"You're right, it's not. But Alexis has gone to a friend's house and I'm off to a show so, he's all yours."

Martha winks over her shoulder before gliding towards the elevator and she has to laugh at the woman's suggestive tone. Kate closes the door behind her, kicking off her shoes before heading towards his room, but she stops in the kitchen when an idea begins to form.

If he really does have a headache then he needs a remedy right? And after the very excellent way he alleviated her headache a few weeks ago, she does owe him one.

She grabs a cup and fills it with ice before easing into the bedroom and softly closing the door behind her.

His room is bathed in darkness and she has to give her eyes time to adjust before she can move to the bed. She sets her glass of ice on the table beside the bed before kneeling down in front of her sleeping boyfriend.

"Castle?" she softly nudges is shoulder, easing him awake.

He grumbles at first but then his eyes flutter open and he gives her a half smile, a small lift of his lips.

"Kate, hi," he mumbles, lifting a heavy, sleep laden hand to her shoulder.

"I missed you today," she whispers, trying not to disturb his headache.

"I'm sorry I didn't call you, the light hurts," he complains, rolling onto his back.

She huffs a laugh at him because isn't it just like all men to act this way when they aren't feeling well? But he's kind of adorable and she does hate that he has a headache because she would have much rather spent the day with him.

"Would it make you feel better if I told you I brought you a remedy?"

"Nothing helps, Kate. Medicine didn't touch it…"

She gives him another minute to think because she did just wake him up and she's sure the headache is clogging his ability to realize what she means.

"Oh, you…you brought me you?" he questions, and she can hear the excitement in his voice.

"Mhm," she hums, reaching for the sheet that covers him and pulling it down the bed.

"Just relax, Castle."

She climbs onto the bed between his legs, reaches for his boxers and eases them down his legs, tossing them behind her.

He groans when her hand brushes against him, starting to harden immediately.

She waits for his eyes to close, knowing that the first brush of her tongue always gets him, always causes his breathing to falter.

Sure enough, he squeezes his eyes shut, tilts his head back against the pillow and she leans forward, drags her tongue slowly up his shaft before taking him fully into her mouth.

She swirls her tongue wickedly around his engorged tip, almost lets him fall from her mouth before taking him in deeper, swallowing as his cock brushes the back of her throat.

His hand finds purchase in her hair, not guiding or forcing but encouraging her to continue.

And then she reaches for her secret weapon, remembering the only other time she's used it on him. Almost as soon as she'd slipped the ice into her mouth and wrapped her lips around him, he'd spilled on her tongue, cursing and praising her. She hopes that the hot/cold contrast combined with his release will cancel out his headache.

Releasing him with a pop, she places one of the ice cubes in her mouth, swirls it around before lowering her lips around his cock again and his reaction is instant, both hands fisting in her hair and his hips threatening to buck.

"Oh, fuck, Kate," he moans, curses spilling from his mouth as she takes him deeper, holds him against the back of her throat until the ice melts.

She hums, lets the vibration wash over him and on the next slide she drags her tongue over the sensitive under side, and he lets go, white hot ropes of his release flooding her mouth.

She swallows every bit of it, holding him in the cool cavern of her mouth until the cold from the ice disappears and the scorching heat returns and he can't take any more, reaches for her.

She climbs up his body, finding his lips with practiced ease and swirling her suggestive tongue around his mouth much like she did his cock.

"How's the headache?" she asks, once she's thoroughly ravaged his mouth.

"Hmm, I almost want to lie because I want more of you, but after what you just did, it has definitely been remedied."

She smirks, pushing herself up on his chest and pulling him up with her.

"Well, you did double the work to get rid of mine, so how about this. I'll make us some dinner while you recover and since we have the whole loft to ourselves, I think there are a few places that we haven't christened yet…"

"God, you're going to kill me," he groans, reaching for his boxers once she's successfully pulled him out of the bed.

"Not my intention, Babe. I have plans for you."

She winks, sauntering out of the bedroom with Castle hot on her heels.

Would love to hear your thoughts! xo