"Kate. I just signed us up for a study," he announces as he bursts into the loft. Kate just closed a big case and had the day off and the following day, which Richard thought was perfect timing.
He had a meeting with Black Pawn and then stopped to pick up some organic vegetables at this store and saw an advertisement looking for participants in a clinical study. A certain word caught his eye and he immediately raced to the psych department and signed up.
He found Kate in the study just closing a book she'd been reading on the couch. "Hi Castle," she says while standing. They meet to share a quick peck on the lips. "Now what did you say when you walked in?"
"I signed us up for a clinical study. And don't worry it's here, so no cameras or anything creepy."
"Wait, what?" Kate asks confused. "A clinical study of what?"
Rick was beating around the bush, "A study of brain waves. We can do it here, look," he says as he pulls some items from the small bag in his hand, "we have these cool sensors that we attach to our heads."
As he starts messing with the electrodes, Kate shakes her head, "Castle what is this clinical study of?" There's a bit more bite in her tone. He sheepishly looks at her, but then goes into a full blown rant, "It's a sex study, see we attach these electrodes and they measure our brain waves while we ... you know, and we record the details here."
Kate's eyebrows hit her hair line and her jaw hit the floor. "A sex study?" her voice croaks out barely over a whisper. Rick can see she's shocked. "Look I thought it would be fun," he wraps an arm around her waist, "plus we're screwing like rabbits all the time anyway, let's get a little science out of it."
"Rick!” she pushes him off. This is our sex life. Our private life. I'm not documenting it for anyone. Where did you find this study?"
"I saw the flyer on NYU as I was cutting through the campus from Caputo's.” She interrupts him, “This is a study for college kids, Castle!” “There was no age limit,” he counters. “Though I did get a strange look from the guy when I signed up. Anyway come on, do you remember sex in your 20s, it was pathetic.” He wraps his arm around her waist again. “I mean compared to now. We are great. I bet we could show those college kids a thing or two. Let’s do this and prove that old people..” the look on her face stops him, “older people, have amazing sex. The study is only for today and tomorrow, August 10th and 11th, and since you already have these days off, its perfect.”
She could no longer argue with him. She certainly liked having sex with Castle. And receiving oral sex, and giving it. She was getting aroused just thinking about it and the way his arm was wrapped around her and his hips were pressing up against hers. She looks up at him. If they recorded their activities fine, if not that was fine too. They would still be having amazing sex. "Ok," she answers.
His lips quickly find hers, she moves her hands around his neck, but then he pulls back, "Wait we need to put these on first." He's so giddy like a little kid and she wants to roll her eyes at him. He sets everything on his desk then runs back to the entryway to grab a little electrical box. He helps Kate attach the electrodes and then does his own turning on the machine. Kate feels all this is starting to kill the mood, but then he turns back to her and the kiss he delivers sends shivers down her back.
He leans into her and she turns so her ass presses against his desk. His hand finds the side of her neck, "Oh Mrs. Castle," he whispers around her mouth, "the things I want to do to you." Kate practically melts as her arousal flares to life. Rick's mouth moves to her neck. Her senses come back and her hands quickly work to unbutton his shirt. He pulls back and jerks her shirt over her head. He finishes the last two buttons on his shirt and drops that as well. He moves back into her, his mouth finding her neck while his hands snake around behind and unclasp her bra. As his kisses trail down her body they find her breasts. She lets out a small gasp followed by a long moan as he gently sucks her right nipple.
She can't take anymore and grabs his pants working feverishly to undo the belt, button and zipper. He shakes them down his legs and moves to her left nipple. Another moan escapes her lips. She reaches for his boxers, "Castle," she moans as both a plea and a warning. He removes her yoga pants and panties, then pulls his own boxers off. Before Kate can move towards the bedroom, Rick grabs her waist propping her on the edge of the desk. Both of his arms are under her thighs supporting her weight so she moves her left arm around the front of her body reaching out between her legs to curl around him. She strokes gently a few times as he steps inside her thighs and she lines him up with her entrance.
He pushes in and her left arm immediately goes back behind her to brace herself. He's not holding back, it's a quick punishing rhythm that feels unbelievably amazing. She’s immediately moaning and so is he. Having her spread out before him just watching as her body jostles back and forward as he thrusts inside her, damn at this pace he won’t last long, but neither will she. He pulls out slightly so he can rub right against her g-spot. “Oh God Castle,” Kate says on an exhale. “Yes, oh, oh, please keep going.” As her encouragement gets more breathy and her muscles start to flutter he knows she's close, so he increases his pressure pushes more against his own tip. Within seconds she's coming and then so is he. He can barely hold up her legs as he falls forward his legs practically giving out as he releases inside her.
He regains the ability to move and pulls out; he helps lower her legs to the ground. Beckett’s legs almost give out as well. She’s still breathless. Rick turns and moves around the desk to the paper. “What are you doing?” she asks. “I’m documenting this.” She sighs and bends over to pick up her clothes. “No, don’t get dressed.” She gives him a glare. “Come on, we’re going to be doing this all weekend. And Alexis is with that club from school so she’s camping this weekend and Mother is at that spa retreat. There’s no one to see you naked, but me. And I like naked Kate Beckett.” She continued to pin him with a glare, but dropped her panties back on the floor and confidently strolled out of the office and towards the kitchen. Rick forgot to breath watching her leave.
Beckett was in the kitchen and Castle walked around behind her. She knew he was satisfied, but that did nothing to dampen his overall arousal. His hands glided around her body. "Mmm you feel so warm," he murmured. "Yea, you just heated me up stud." "I'm not sorry for that, actually can't wait to do it again."
Kate needed a breather and a snack, she could see how excited Rick was, especially with his new toy. They haven't had marathon sex in a few months, but this would be fun. Kate heated up some left over pasta, which Rick also shared and then he practically dragged her to the bedroom.
Rick drives on top of her and Kate screams then giggles. She fixes her electrode he knocked off as his lips sucked her neck. Damn, she's sure what he's doing is going to leave a mark. His fingers are tracing lines from her ribs down her thigh. She lifts her thigh bracketing his side to encourage his fingers to continue to stroke her thigh.
He's being so gently and soft she barely even feels him slide inside her. A slight gasp escapes her lips and he pushes himself up over her and lowers down to her lips again gently kissing her while moving inside her. Her arms wrap around his body and they move together. 45 minutes later they hold each other tightly as they both relax. Kate loved both sides to their love-making, the rough lustful and the gentle love.
Rick couldn't help himself in the shower, but he didn't want to keep going because he didn't think the electrodes could get wet. As soon as they were out he forced Kate back to bed. His mouth was between her thighs. He worked her up quickly, but then kept her there. She begged for her release before he finally took her over the edge. They need to pause for dinner, but had sex twice more before they fell asleep with one of those being from behind at the kitchen counter as she attempted to wash the dishes.
Castle woke with a start, his hips jerked involuntarily as his consciousness returned and felt her lips sucking on him getting him hard. He looked down and noticed she had put the electrodes on, see she was in this as much as he was. He felt his in place as well. God she was good and a deep throaty growl left his body as she took him further into her mouth. "Kate," he whispers drawing her name out, but those are the last words he utters. As he approaches release there's panting, moaning and unidentifiable mumbling. She swallows him deep as he goes.
Sunday is more of the same with them exploring positions and furniture around the loft. He found his new favorite position as Kate knelt on the stairs a few steps above him as he stood on the ground, it was the perfect height and damn if he didn't like the view. He never wanted to pull her hair before, and he wasn't sure if she would kill him if he did, but she suggested this position. He gathers up her hair and arches her neck back some, she moans clearly enjoying it. The grip on her waist tightens as he continually drives into her until he falls over her back releasing with her.
Neither of them can get out of bed on Monday morning, both sore and exhausted. Kate needs to make it to work and she hopes she doesn't need to chase any suspects because she's walking like she just got off a horse. He turns in their paperwork at the college. He receives a small slip of paper with a number on it letting him know he can get a copy of the results in a few days.
Wednesday he returns with the results, he waits until Kate gets home to open them. The first thing they found is a hand-written note. Dear Participant, at first we thought these results were faked, but you did have corresponding brain waves which matched your records. We want to congratulate you, you have 8 times as much sex as the average of the other participants. Kate and Rick both look at each other and chuckle. It's really great to see such a healthy sex life later in life. Rick pulls out the chart which compares them with the other participants. Most only had sex 3 times, which they both agreed wa sad and boring. The results showed that Kate's brainwaves hit their highest during their rough fucking like on the table and up against the counter. Rick hit his highest giving or receiving oral sex. "Well now I know how to really stimulate your mind Mr. Castle," Kate purrs. He kisses her ear, "Oh yes you do Detective Beckett. "
