It was sometime after four in the morning when Diana and Knock Out arrived home, not that she cared, the drive home seemed to float by. It was like nothing existed outside of her little world, she was happy, everything was perfect.

"Home sweet home." Knock Out announced softly, his passenger door opening and the holoform materializing nearby, offering a hand to Diana.

She had to smile as she took his hand. "You're so hot."

"Well thank you." he grinned, pulling her to her feet.

"No no, I mean temperature wise, your holoform." she laughed, flicking a finger against his nose. "You're so warm."

"Mmm, that's just the way the holoform is, energon and all."

Diana smiled, poking at his nose again. "Well if we ever move to Alaska, you can be my heater."

"Oh, so that's all I am to you? A tool? A machine? Something solely created to make your life easier?" he grinned, stepping close to her, a predatory gleam in his eyes.

"Please, when have you ever made my life easier?" she matched his grin.

"That's it squishy, you've offended me for the last time." his hands dove for her waist, tickling and prodding at her sides. "Oh ho, so I'm not the only one who's ticklish."

Diana squealed in response, breaking into a fit of giggles as she wriggled from his grip, turning to run about the shop in an attempt to evade him. "Don't!" She managed to circle around the back of his alternate mode, keeping it between her and the holoform. "You stay away from me metal face!"

The holoform of Knock Out only grinned, flickering out of existence as the Aston Martin shifted, plucking Diana from the ground as he transformed into his normal form. "So, hiding from me... behind me, not the greatest of plans." he chuckled, examining her as she pouted in his hand.

"You're a cheater."

"I don't lose."

"Odd, I seem to remember beating you." she grinned.

Knock Out rolled his optics at her. "Yeah yeah."

She smiled, tracing her fingers along the contours of his body. "So, I have a question."

"Hmm?"

"Well, you know how humans mate, so I'm just curious, how do you guys do it?" she glanced to him, her fingers still smoothing along his chest.

"Ah, well to be honest, it's not much different. Connect part a to part b." he shrugged, a look of amusement on his face. "But, I suppose there are really two forms to our couplings."

Diana glanced to him again, waiting for him to elaborate.

"While we often have many casual encounters, or temporary partners, if we are mated to someone and connected by a spark bond, it isn't something we can go back on. Once we're spark bonded, we're united forever, body and soul. There will never be another for you once you've made that connection."

She smiled. "It sounds romantic, perfect, how it should be. Too many people treat love so casually, it's a shame." she looked to her hands a moment. "Your sparks are like your hearts, right?"

"You could say that, it contains all we are, our life and essence."

"With the way you can transform, could I see yours?" she kept her gaze on her hands, unsure of what he might say.

Knock Out was silent a moment, consideration flickering in his optics before he spoke softly. "Yes."

Diana smiled, watching as he carefully settled into a sitting position, cross legged, and holding her in both his hands before his chest.

"I doubt you've ever seen anything like it so, just." he frowned a little.

"Knocks, are you nervous?" she smiled again, voice teasing. "I thought you had no shame."

"I don't, but one's spark is..." he frowned again, trying to find the right words. "Important, we only show it to those we truly trust."

Diana nodded slowly, understanding the tone in his voice. "I won't break that trust, ever."

He smiled at her, leaning forwards to carefully nuzzle his face against her. "I know."

There was a moment of quiet between the pair before Knock Out relaxed, Diana watching with curious eyes as the seemingly solid pieces of metal that made up his chest began to shift and part until his spark was revealed, glowing a gentle blue in the dark of the garage.

"It's beautiful." she murmured, hesitantly reaching a hand out. She sensation of static electricity tickled up her fingers and across her hand, making the hair on her arms stand on end. Her fingertips had just grazed the area of his chest that cased his spark when she froze, wondering if she should really be touching it. She glanced up, surprised to see that his optics were dark, off lined, a serene look on his face.

A smile washed over her own face as she looked back to his spark, ever so carefully extending a finger to touch it. She felt Knock Out shift slightly at the touch, as if he had inhaled deeply. Another glance to him proved he was still relaxed, so she gently splayed her fingers over the little bundle of energy, pushing and testing the texture with her palm.

It still caused the feeling of static, but it wasn't unpleasant by any means. She wrapped what she could of her fingers around it, squeezing lightly. She couldn't help but think of a stress ball, the way it was solid but somehow soft at the same time, moving beneath her fingers while still retaining it's form.

Knock Out trembled slightly, the faintest of rumbles rising in his throat.

Diana looked up to him. "Does it feel funny? Me touching?"

"No, it feels good..." he murmured.

She smiled, bringing her other hand to his spark as well, caressing and kneading.

He shuddered again, another soft sound escaping him.

"If I'd known this was so sensitive, I'd have asked to see earlier." she said quietly, gently scraping her nails along his spark and grinning widely as he shook, bowing his head to her with a groan. "Little squishy, able to reduce the big bad robot to a quivering mess with a few touches."

"I've never let anyone do this." he responded, his voice somewhat strained.

Diana smiled, moving her hands from his spark to his chin. "Thank you for showing me."

His optics flickered back online, focusing on her. "I, want to try something with you." his voice was low, sending shivers down Diana's back.

"Anything."

He lowered his hands to the floor, letting her step from his grasp before he changed back into his alternate mode, activating his holoform once the process was finished. "Now. you might have to play teacher again. I haven't exactly done anything like this before." he smirked, walking over to her and gathering her in his arms.

"Hmm, and whatever would that be?" she teased, giggling as he lifted her and carried her up to her loft.

"I'm sure you'll figure it out." he turned so his back was to her bed, taking a few steps backwards and sitting on it, positioning her in his lap so she was straddling his legs and facing him.

"Well, I don't know what there is to explain, it's like you said, part a to part b." she grinned, setting her hands on his shoulders and pushing him onto his back.

"I suppose, but you're so, delicate, our version of intercourse can get rough, very rough." he brought his hands to her hips, examining the curves of her body.

"Maybe I like rough." she purred, leaning forwards to kiss him.

He growled softly. "Don't say that, I don't want to hurt you."

"You won't hurt me Knocks." she smiled, trailing a series of kisses from his lips to his neck.

He gave another low growl, closing his eyes. "So soft."

Diana sat up, tugging on the vest and shirt he wore. "These need to come off."

Knock Out only grinned, the clothing almost crackling as it dematerialized, leaving him topless.

"Cheater."

"I told you I -"

She silenced him with another kiss, letting her hands explore his chest, marveling at the feel of him, so solid and real, and so well muscled. She had to ponder why he'd chosen the form he had, and where he'd gotten the idea for it's appearance.

His hands tugging on her dress caught her attention. "This needs to come off." he smirked.

Diana smiled, lifting her arms above her head for him to remove it. "By all means."

He pulled her dress off easily, tossing the silk and chiffon garment to the ground. The Medic was quiet a moment, studying her. She wore no bra, as her dress had been strapless, only a thin pair of lacy panties covered her now. He'd seen her naked before, but somehow, this was different, seeing her in nothing but moonlight, her hair loose around her shoulders, perched so perfectly in his lap... He sat up, tucking a finger underneath her chin and pulling her into a long and sweet kiss. "Beautiful."

She smiled against his lips, tangling her fingers into his hair and guiding his mouth down her throat, along her neck and to her collarbone.

It only took him a few seconds to understand what she wanted, and a few minutes to master the art of using his mouth to elicit the sweetest sounds from her. When his delicate ministrations brought him to her breasts he hesitated the slightest moment, after all, these were new to him, when a carefully placed kiss drew a gentle gasp from her he smirked, any doubts banished by her reactions and encouragements. Same species or not, it roused the most primal male instincts in him, to hear her cooing and moaning, to be the cause of her ecstasy.

He was still sitting upright, Diana in his lap, although she was nearly bowed over backwards so his lips could roam her upper body. He kept one hand along her lower back, ensuring she wouldn't fall over backwards. His free hand was exploring her stomach, fingers grazing the hem of her panties before delving between the fabric and her skin. A few seconds of searching and he found what he was looking for, that delicate little nub that caused Diana to writhe in his arms.

He chuckled against her neck. "Mmm, watching you do this at the lake was torture." he nibbled at her earlobe, fingers still working beneath her panties. "And now I get to do it."

Diana couldn't form a coherent reply, her hands clinging to his shoulders for stability as she twitched in his lap. How the hell was he so good at this? It wasn't fair! She shook her head, willing her tongue to work. "I, I can't, please..."

"What was that?" he grinned.

"I want, you, please..."

"As you wish my lady." he pitched to his right, easily rolling and setting her on her back so he was between her legs, one hand still at her back and the other braced near her shoulder to hold himself up. A moment of pause hit him as he looked her over again, his hands eventually pulling her remaining bit of clothing from her form. He crept between her legs again, another flicker of static signifying that he'd also shed his last bit of so called clothing.

"So warm." she murmured, opening her arms to him and pulling him to her. She lifted her legs, settling them about his hips and looking to him. "You sure you're, you want to do this?"

Knock Out smirked. "Interface is nothing new to me."

"But I mean, with me, a human."

"I don't care what you are, you are you and that's all that matters."

A grin formed on her face. "Then allow me." she wormed one hand between his belly and hers, little fingers carefully wrapping about his member. "Oh come on, did you have to make everything about this body so ridiculously perfect." she had to roll her eyes despite their intimacy.

He laughed softly, involuntarily pushing himself into her hand. "I live to please my lady."

Diana smiled, touching her lips to his as she ever so slowly guided him inside, both of them going still as he hilted himself within her.

"Sweet Primus, so soft, so warm, so tight..." he growled softly, slipping a hand beneath her back again to pull her up and against himself. As before he kept his right hand braced on the bed to keep himself steady.

She smiled again, exhaling softly. Never before had she felt so perfectly fitted to a lover. She brought her arms about his shoulders, rolling her hips gently to encourage him to move.

He took the hint, rocking against her carefully.

She couldn't help but notice that he seemed to be holding himself back, the frown on his face evidence enough of his restraint. "Knocks?"

He glanced to her, a warm smile on his face. "Yes?"

"Don't hold back." she kissed him quiet as he tried to reply. "You won't hurt me, so please, just go."

Another frown was on his face as he considered, bowing his forehead to hers before he spoke quietly. "Alright."

And then it was like something had snapped between them, Knock Out increasing his speed to slam his hips against hers. His hands found hers, lifting and pinning them above her head.

The sudden change in tempo had caused Diana to blink initially, but she had little time to process the change as bliss overtook her, her mind turning to mush as he pounded into her.

He didn't keep them in that position long, the Medic sitting upright so he was sitting on his kneels and pulling Diana with him so she was seated on his lap. She didn't have to do much in response as he easily maneuvered her about until they settled into a smooth rhytym, her arms locked around his neck as she bounced in his lap. His mouth was at her neck again, teeth grazing along her skin, nipping at the hollow of her throat.

There was something very primal about the sounds he made, and Diana was thrilled by them, although her own sounds of pleasure seemed so demure in comparison. She had to admit, she was a little curious about how rough Cybertronians were during sex. so she grinned, using her weight and legs to flip him onto his back so she could straddle him. She almost laughed at the surprise on his face, but instead splayed her hands over his stomach so she could lift her hips and drop them down again.

The predatory gleam returned to his eyes as he tried to sit up, a growl rising in his throat as she pushed him back down with a scolding tsk. He seemed to settle beneath her, his hands gripping her hips and helping her to rise and fall on him. It was when she closed her eyes and let her head loll back that he flipped her so she was again beneath him. "Mine." he snarled against her neck.

"Yours." she hummed in reply, her body latching onto his as he ravaged her.

His hands were on her hips so tight she was sure she'd have bruises, but she didn't care, not one bit.

She only made it a few minutes before she felt a heat rising in her belly, her groans growing louder and more frequent. "Knocks, I'm, I'm going to..."

He growled, loud and deep as he bit into her neck, the sensation of his teeth breaking her skin the final act that sent her over the edge. He came as she did, the tight heat of her insides drawing him into the depths of pleasure along with her. She was vaguely aware that he too was crying his release, albeit against her neck.

Knock Out gave a few more slow thrusts before his arms gave out and he dropped atop her.

Diana had to catch her breath, a momentary jealousy overtaking her that he didn't need to do so, as the holoform didn't breathe. She blinked as he suddenly bolted upright, his eyes locked on her shoulder, shock on his face. "What?"

He shook his head, features crinkling into a frown as he inspected her neck. "I hurt you."

"It's okay."

"It's not okay." he glanced to her, such a deep regret in his eyes that Diana had to gather him in her arms, like a mother soothing her child.

"Knocks, it's fine, it's not that bad. I'm okay." she felt him sigh against her chest, returning the embrace.

He lifted his head, another frown on his features. "Slag, one second." he muttered, rising from the bed and off lining the holoform.

Diana sat upright, watching as his true body shifted into his bipedal form. "What is it?"

"Message from Megatron." he frowned, a deep sigh escaping him. "I have to go, I'm sorry." he walked to the railing of her loft, reaching his hand out to her.

"It's alright." she smiled, reaching her own hands out to his, smoothing her fingers along his. "I'll be here."

He sighed again, the angst in his eyes making it obvious that he didn't want to leave her, especially not now. "I'll be back as soon as I can."

Diana nodded, kissing his fingertips. "Be safe."

He nodded, turning and stepping out of the shop, transforming and vanishing into the early morning light.

Diana smiled, flopping back into her bed and waiting until she couldn't hear his engine anymore. She closed her eyes, snuggling into her blankets. "Perfect."

Hastily written smut... win? *shrug*

So... the new episode of TFP... Knocks gets stuck in the wall x'D Poor baby!