A/N: Because I need fluff and happy and mush.
"We got a mad, mad love,
we got a mad, mad love,
we got a really really really really really really really mad love."
Her phone chirped.
A sharp high pitched, evil sound and Kate cracked one eye open, growling at the gyrating device. She knew who it was without looking, without answering, without even touching it.
He had already called three times.
But Detective mode kicked in and she rolled, one arm flinging her hair back away from her face and the other steadying her body on the bed as she grabbed hastily for her phone.
She thumbed the screen, brought it up to her ear and mumbled, "Beckett."
"It's doing it again, Kate." Castle hissed.
"Castle, for the love of god, it is -" She glanced at the clock, "Four in the morning. Why are you even up?"
"There were noises, I had to investigate." He hissed, loud enough for her to know he was whispering.
Kate shook herself awake as best she could, planting both feet on the ground and rolling her toes through the rug, "Where are you?"
"In my bedroom."
"Where in your bedroom?"
"Sitting on the floor with my back to the door."
Kate laughed, rolled her shoulders and stood up.
"I'm coming over, Castle. Enough is enough."
"Are you going to stay?" He asked eagerly, the phone muffled by shuffling noises as he clambered to his feet. "Spend the night? Keep me safe?"
"No, I am putting an end to this once and for all." She flicked on the light, blinded herself and stumbled into the bathroom cursing, "I need sleep, you need to knock it off and that thing has to go."
"Kate it was a gift."
"The first thing you ever gave me."
He snickered, "Besides -"
"No sex jokes, Castle. I am deadly serious about this."
"Oh, Kate..." His voice trembled, somewhere between arousal and terror, "What are you going to do?"
"I'll be there in twenty." She replied, the last sound he heard before the line cut out was the harsh metallic click of her gun and holster.