DISCLAIMER: ALL CHARACTERS BELONG TO MARVEL CINEMATIC UNIVERSE.

The rating of this story has CHANGED from T to M now, due to sexual content. Please bare this warning in mind if you decide to continue reading.

~0~0~0~0~0~

The next morning proved just as hard as Natasha had imagined, but who could really blame her? Steve was ridiculously attractive, especially when she had gone up to the main lounge of the tower to find him preparing to go on a run with Sam. The way those muscles of his flexed as he stretched did sinful things to her body, and ignoring him as she settled down onto the couch beside Tony was the hardest thing she had ever had to do.

Pair his god-worthy body with his gentlemanly ways, his selfless personality and his kind soul, and Natasha was powerless against her desires. It took all her self rest to resist waltzing over to him and suggesting that he helped her body stretch, in much more mouth-watering ways than preparing for a run. The thought alone caused her to have to sit with her legs clenched a little tighter together.

When Steve left the room, he glanced over his shoulder and winked at her, confirming her suspicions that he had stretched for a little longer than actually necessary, and had purposefully chosen a common place rather than his own floor. What that achieved was leaving Natasha feeling very flustered, with the feeling of heat rising through her entire body.

Needing to let off some of that steam, she headed for the extensive gym in one of the lower floors. Every machine possible was there, as the gym took up an entire floor. The treadmills had a particularly pretty view of the city, and Natasha spent thirty minutes on one until she had worked up enough of a sweat. With her muscles warmed up, she tackled the step-machine next, and then did a bit of weight lifting to get her arms and back moving.

She glanced at the mats in front of the mirror at one side of the room, and had a particularly thrilling thought of sparring with Steve on them soon. She would have to ensure it was on a day where the tower was empty, as she doubted she'd be able to stop herself wrapping her legs around his waist, flipping him over to pin him down and kissing him senseless. She had a very good feeling that he certainly would not complain.

Such thoughts ran through her head all morning, much to her torturous pleasure. But, she also remembered how shy Steve had been last night, and knew that they had to take this slow for both of their sakes. She'd never been in a proper relationship before, and sex had never been involved with feelings before. Steve had made it quite clear that he had never been with anyone before, and she didn't want to make him feel uncomfortable or pressured.

So, she spent the next hour trying to come up with a plan to avoid practically throwing herself at him and kissing every inch of that sculptured, god-like body of his. All that achieved was making her feel hot and bothered.

It was approaching lunch time when Steve walked into the gym. Natasha, who had been taking a break, looked up as he approached, a coy smile already threatening on her lips.

"Nice run?" She asked, watching his every movement as he got closer and closer to her. The air became thinner, tingling with a tantalising hint of excitement. The energy between them had changed, due to recent events, and she loved it. It was heightened now, and definitely thrilling. She couldn't ignore the little shivers than ran up her spine whenever he looked at her, and how her stomach would dip slightly whenever that smile of his appeared, especially when it was accompanied by the dimple.

He smirked, knowing that really, she wasn't all that interested on his morning activity. "Yeah, it was good." He answered, glancing at her up and down as she leaned back against the mirror.

Biting her lower lip, she tilted her head to one side. Maybe, just maybe, she had arched her back slightly, but she would never actually admit that out loud. "Did you come down here looking for something in particular?" The cat and mouse game was so much more fun now she knew how his lips tasted, and how wonderful his body felt against hers.

Clearly thinking the same thing, Steve grinned. "Yes, in fact I did."

But, just as he was about to get closer, the elevator doors chimed open and Sam, completely oblivious to what he had just interrupted, flashed them both his cheerful grin. "Hey, looks like great minds think alike."

"Was the run not enough for you both?" Natasha asked, folding her arms over her chest. She was fully aware that the new stance made her breasts press together, and she felt that pool of desire in her stomach deepen when she noticed Steve's eyes picking up the same thing. He flushed instantly and turned away, but it had seemed like it had taken him a great deal of effort to maintain his gentlemanly ways.

"Please, the run was just a warm-up." Sam said, giving her a wink before turning to head for the weight rack.

Noticing how Steve had stiffened slightly, Natasha rolled her eyes at the alpha-male behaviour. Usually, she hated when someone was possessive of her. But, she was his girl now, and she liked the fact that he could get riled up over his friend winking at her, even when it was someone as harmless as Sam, who she was convinced was scared of her still.

"Steve, come spot for me?" Sam asked, as he started attaching the right weights to the bar.

Glancing at Natasha one last time, Steve headed over. Natasha stretched her arms over her head. "I'll catch you boys later." She said, with a meaningful look to one of them in particular, as she strode out of the room and headed for the showers.

~0~0~0~0~0~

Nervousness was not a feeling that Natasha Romanoff was particularly familiar with.

But, she'd already changed her outfit three times. Standing in front of the full length mirror in her current choice, she scrutinized it.

It was a beautiful dress, one of her favourites in fact. The colour was such a deep navy that it looked black until she stood in direct light. It was modest enough, considering that it kept her chest completely covered, but it had no shoulders or straps whatsoever. It cut off directly at the middle of her thighs, leaving a generous amount of leg on show. She'd planned to pair it with a pretty necklace and heels, until a thought had crossed her mind.

Was this a little too dressy for tonight?

Steve had wanted it to be as close to a date as possible. Natasha had been on plenty of dates before, but most of them had been due to a secret mission, and the others had simply been wastes of her time when she'd been bored and in need of company. She'd never actually entertained the thought of dating someone before now, so she used to always just chuck on whatever dress and not give it much thought.

But, this was different. It was Steve, and she wanted to make an effort. She knew he'd be gentlemanly enough to compliment her on whatever she decided, however that wasn't the point. She liked leaving him breathless, knowing that she had such an effect on him - especially as such an effect went both ways. It showed her that this really wasn't a one-sided thing, and that perhaps it was really okay to fall for him, because he had every intention of catching her.

Taking a deep breath, she decided that the dress would do perfectly.

Her fingers shook slightly as she pressed the button to Steve's floor. "Jarvis," She said, as she checked her reflection in the small mirror next to the control panel. "Please alert me the second Tony decides to come home."

"Of course, Miss Romanoff," The computer system responded willingly. "Have a lovely evening."

She smiled, just as the elevator doors pinged open, and the sight before her made her gasp.

The only thing lighting the apartment was a large display of candles, lining the coffee table and various other furniture that decorated the lounge. A very comfortable looking faux-fur blanket was thrown over the couch, and gentle music played in the background.

"Steve?" She called in, and heard something from the kitchen.

Seconds later, Steve rounded the corner, and stopped in his tracks the moment he laid eyes on her.

Her smile widened, just as her heart felt ready to burst in her chest. He looked so handsome, dressed in a well-pressed shirt and black pants, a thick belt around his waist. Even his shoes looked as if they had been polished. "Hey," She greeted him softly.

"Nat," He breathed out, walking towards her slowly, drinking in the sight of her. "You...my God, you are stunning. I mean, you're always stunning but it's just that...wow." He blushed slightly at his stumbled words, but she just found him even more endearing for it.

Practically beaming at him, she replied, "You don't look too bad yourself, soldier."

When he reached her, his hands settled on her waist, gently touching the softness of her dress as if it was the most precious material in the world. Just as his eyes landed on her full lips and he leaned down, Jarvis interrupted, "Captain Rogers, your food has arrived."

Natasha didn't miss the quiet groan that escaped him as Steve's eyes closed, his hands remaining on her waist for a second longer before he let her go. Her blood heatened as she saw the unmistakable glow of desire in his blue eyes.

"I'll be right back." He told her, sounding very reluctant to leave her in the first place.

She smiled at him. "I'll get us some drinks." She said. Quickly, he headed for the elevator, and she went to the kitchen. The fridge was stocked with enough food to feed a small army, but she knew that the super-soldier serum inside him made Steve's metabolism faster than any man's, and therefore his appetite was considerably larger than most.

Finding a particularly nice looking bottle of wine, she poured it into two glasses and headed back into the lounge. Placing the glasses down on the glass coffee table, she sat down on top of the fur blanket and waited, a smile playing on her lips as excitement and anticipation pumped through her.

Minutes later, and Steve returned with a bag of food. Having managed to get a few minutes together at lunch, he'd already asked her what she'd want to eat that night. He placed the food bag down, and surprised her when he kissed her. Her hand flew into his hair, holding him in place until her lungs screamed at her for oxygen.

When their lips parted, she commented, "I've been waiting for that all day."

There was a pinkness to his cheeks, as if Steve himself was surprised by his forwardness. "I couldn't wait any longer." He explained, somewhat apologetically.

His shyness warmed her. "Neither could I." She admitted, which caused the dimpled smile to make an appearance. She turned her attention to the spread in front of them. "This is quite a feast."

"I know you said you wanted duck, but you weren't sure about that or Hong Kong chicken, so I thought perhaps we could just have a mixture of everything." Steve explained, sitting down beside her and passing her a plate.

They ate with comfortable conversations about anything and everything; Natasha learnt that once she'd left the gym, Steve had been too caught up in watching her go that Sam told him he was a terrible spotter. Flushed, Steve had blamed it on a bird passing by the window, but he wasn't entirely convinced that Sam had bought the excuse. Either way, Natasha laughed at the image that entered her mind of the two of them bickering.

Conversation flowed between them, with a couple of peaceful moments of silence as they tucked into their food. With every second that passed, Natasha found her body relaxing even more, as the food filled her stomach and Steve's deep voice washed around her.

The food was good, and the wine complimented it perfectly, but the company was even better. Being around Steve in such a private, intimate setting did not put her on edge at all. It was as easy as breathing. She loved the fact that they had finally gotten over that invisible space of no-man's land between them. Now all their cards were on the table, and she was slightly surprised that she didn't feel vulnerable about that.

Once they'd finished, they both washed up and put the rubbish away. Then, as they walked back into the lounge, a particular song played, and Natasha looked up at him hopefully. "Care for a dance?" She asked.

Steve hesitated slightly, and hoped she hadn't noticed. A memory of a promised dance returned to him, but when he blinked, all he saw were those pretty emerald eyes glistening as they watched him. Perhaps, he'd finally found the right partner after all.

Natasha noticed how he paused, and her heart skipped a nervous beat, but she relaxed as soon as Steve took her hands in his and said, "It would be my honour, Natasha."

It became quite apparent to her that Steve didn't know how to dance, so she taught him a simple box-step. But, as the song continued, they pretty much just swayed in each other's arms. It was nice though, and Natasha's head rested just below his shoulder as they moved slowly in time with the music.

Once they'd danced for a couple of songs, Steve led her back to the couch and pulled her onto his lap. Giggling, Natasha straddled his waist, the new position making the tight material of her dress bunch up around her hips, therefore presenting even more of her thighs to him.

Steve's throat bobbled as he noticed, but to his credit, he didn't gawk at her like some sex-craved fool. Instead, his hands stayed at her hips, and he looked up at her in adoration. "What's going on in that head of yours?" He asked gently, as if he was trying to work out if she was having a good time or not.

She smiled at him, her fingers brushing a golden lock out of the way of his eyes. "I'm thinking that I must be the luckiest woman in the entire world." She admitted,because that was exactly what had been going through her mind as she looked down at him. He'd gone for an open-collar look, meaning the top three buttons of his shirt were open, exposing the golden skin of his chest. She knew from their time at Sam's house just how perfect that chest of his was, and having a small glimpse of it now had her wishing she could just rip the shirt right off his chest.

Slow, Nat, she reminded herself. For both of you.

Her answer earnt her one of Steve's breath-taking smiles, and she knew she'd never not be affected by him. "I'm the lucky one. Thank you, Nat, for giving us a chance."

When he kissed her, the best kind of shivers ran up and down her spine. Her entire body burst into flames as his mouth dominated hers, his tongue sweeping inside her mouth and exploring slowly. Her nails lightly scratched the back of his neck, twisting in his golden hair.

Deciding to have a little fun of her own, Natasha broke the kiss and started trailing her lips along his jawline. He had shaved that evening, and his soft skin felt so good against her mouth. His familiar scent of cinnamon rushed over her, and she made a mental note that it was quite possibly her favorite smell in the entire world. As she moved onto the area below his ear and sucked gently, she felt him moan, his entire body trembling ever so slightly.

Missing his lips already, Natasha reached up to kiss him again. This time, it was slower, steadier, but it didn't lose a hint of passion as their tongues explored one another. She'd never, ever had someone kiss her like this, as if they were pouring their heart into it. In that moment, she came to the realisation that Steve Rogers had ruined her for any other man.

Not, she thought to herself, that she could ever possibly want anyone else.

His hands stroked her sides in small circles, and she rolled her hips to that rhythm, very much aware that it caused her to rub against him in all the right places. She could feel the effect she was having on him, it was pressing into her thigh and didn't leave much to the imagination. It seemed that super-soldier serum enhanced everything. She bit the inside of her lip to stop herself from smiling too wide at this revelation.

"Nat," He gasped out, and when he opened his eyes, they had turned a shade deeper. "That feels incredible."

"It can feel so much better." She told him, her tongue sneaking out to give his bottom lip a sensuously slow lick.

Another moan fell from him, and it did nothing to cool down the heat burning in between her thighs. "You're driving me insane." He whispered, as his lips captured hers once more. In his kiss, he devoured her mouth, as if desperately not wanting to waste a single second. His tongue brushed over hers, and that tingling sensation consumed her body once again.

She could feel his hands move slightly upwards, stopping just below her chest before heading back down to her waist. "Steve?" She spoke around his mouth. "You can touch me, if you want?"

He paused, but the darkened look in his eyes remained, showing just how much he craved her. "I...I don't know how." He admitted, and his cheeks reddened in embarrassment.

God, she hadn't meant to make him feel stupid. "Do you want me to show you?" She asked, covering his hands with his own. When he nodded in response, she lifted his hands with hers, settling him below her chest again. "Just take your time. Explore. Feel."

Steve swallowed, but kissed her with growing confidence, and she left his hands where they were, not wanting to rush him. Although her entire body yearned to feel his hands against her without clothes in the way, this was a big step for both of them, and there was no need to rush it. She resisted the urge to arch her back.

If Tony Stark chose to return home right now, she'd kill him before he even made it to the elevator.

But, all her thoughts rushed from her mind as Steve's hands moved up, cupping her breasts. Her back arched almost instantly, not because it had been so long since she had been touched there, but because it was Steve's hands doing the touching. Even with the barrier of the thin dress material between his hands and her skin, her entire body felt on fire.

A little unsure, his hands remained above her dress, but when she kissed him with fervour and encouragement, he squeezed gently. She gasped against his mouth, shuddering as another shiver of pleasure ran down her spine, all the way to her toes.

"That's it." She whispered. "That feels so good, Steve."

His confidence grew at her words. He was struggling to remember to breathe as he felt her body move against his, and the thin material of her dress wasn't much of a barrier between her breasts and his hands. What he was feeling right now was something he had never experienced before, but it certainly was one of the best things he had ever felt. He ached for her. God, this woman would certainly be the death of him.

They continued their heated clashing of lips and tongues, of rolling hips and squeezing hands. Then, Steve's fingers found the zip of her dress, ghosting over it but hesitating.

She sensed him back off. "Steve, if you do not want to-"

"I do." He said, and he really meant it. But, that didn't mean he wasn't battling with his morals right now. "But, it's just...what sort of man would I be?"

She understood what he meant. Steve had been brought up in a time of courting and waiting for marriage. So, she leaned her forehead against his and breathed out slowly. You are so different from any man I have ever met before, Steve. Don't feel guilty for feeling how you do. Yes, okay, tonight is only our first date, but we've known each other for years. I've told you things that no one else knows." Her fingers danced over his cheekbone comfortingly. "I trust you, completely."

Her words eased him. How long had he spent picturing being with this woman? Not just physically, but emotionally? As his eyes scanned her face, he saw no hint of doubt. She meant what she said, but he knew she wasn't going to push him.

But, he wanted this. So much so that he couldn't think of anything else apart from her.

His nose nuzzled her cheek as he inhaled deeply. "I'm ready, Natasha." He whispered.

She couldn't help but feel excited at his words, but she let him initiate everything from here on. Closing her eyes as he kissed her once again, she felt those fingers of his ease the zip of her dress down, allowing the tight material to part. Due to there being no straps holding the dress over her shoulders, it pooled at her waist, presenting him with her black, strapless bra.

His throat bobbed at the sight. He'd never seen a semi-naked woman before, and even in his wildest dreams, he'd never allowed himself to think that woman would ever be Natasha. But, she was in his lap, with only the thinnest layer of lace across her chest.

As his hands brushed over her breasts once again, Natasha threw her head back with a gasp at the new sensation. The lace kept his skin from touching her directly, but it still added more fuel to the fire burning inside her. Steve looked up, and relaxed instantly when he realised her reaction was a very, very good one.

As he brought her lips back down to his, his hands continued to feel, palms gliding over her alert nibbles. Soon, his fingers found the clasps at the back. This took a little bit longer than the zip, as clasps were a bit tricker and Steve had never had to deal with them before. Natasha could picture his brow furrowing with confusion as he worked to undo them, but before she could open her eyes to check, the bra fell from her body and cold air hit her nipples directly. Besides, with the amount of pleasure that was strumming through her body, opening her eyes would probably have felt like a greater task than it actually was.

This time, as Steve's hands roamed, there was nothing blocking him from touching her. Her back arched, pressing into his palms even more. Steve's lips grazed down her jaw, down the column of her throat before dancing over her collarbone, so close to where she wanted his mouth to go but remaining away from it.

"Steve," She managed to gasp out.

Not knowing where the sudden bolt of boldness came from, Steve followed his instincts and allowed his mouth to drop to one of her perfectly shaped breasts - not that he had any experience on the matter in able to compare, but to him, they were perfect. They fit perfectly into his hands, and his lips mapped them slowly, coating her in sucking kisses. When his mouth finally engulfed a nipple, a loud moan sounded from her.

Spurred on by her reaction, his fingers tweaked the other nipple, not wanting to leave it out. Then, he switched over his minstrations, enjoying the soft whimpers that was falling from her lips. Her skin felt incredible to him, the taste of her dancing over his tongue as he continued to lap and suck. Natasha's back arched, pushing her further down onto him, but also bringing her chest even closer to him.

After a few minutes of worshipping her breasts, he returned his mouth back to hers, and she returned the kiss hungrily.

"Nat," He choked out, feeling her hips press down into his once again. "I want to make you feel good."

She was about to tell him that he was doing exactly that, but then she realised what he was meaning. Unable to ignore just how desperately she wanted that too, she said, "Let me get out of this dress quick."

Steve was left speechless as Natasha stepped away from him and shimmed the navy dress from her slender body, revealing black panties which matched the brea that he had removed just minutes before. His eyes took in the sight in front of him in great detail, and Natasha smiled as she climbed back onto his lap.

She guided his hands once again, leaving them on her powerful thighs as she kissed him. As his tongue found its way inside her mouth, his hands stroked the skin of her thighs, admiring the way he could feel the firm muscles below. He soon found that the insides of her legs were slightly softer, and as his fingers danced deliciously close to her panties, Natasha pushed her hips against his hands slightly, encouraging him.

Remembering what she said about instincts, Steve allowed one finger to trail down her pants. They were practically soaked through, and he knew enough to know that was a very good sign. Natasha gasped against his mouth, humming as she felt his fingers playing with the lacy trim of her underwear.

Then, one bold hand slipped inside the material and cupped her, fingers pressing against her hot, wet folds, and she shuddered. "Yes, Steve," She moaned out, nails clawing at his back slightly.

He was a little surprised at just how wet she was, and he thoroughly enjoyed how her naked chest was pressing against his shirt, her nipples stiff and alert. As her hips rolled, she rubbed herself against his hand, coating it in his juices. Then, after admiring the way she felt, he slipped one finger inside.

Instantly, Natasha's eyes flew open. "Oh, yes," She whispered, her head tilting back as she lifted her hips slightly, lowering them down slowly so that his finger moved deeper inside her. Getting the hint, Steve started to thrust the digit inside her, in and out to the rhythm that she set with her hips.

He kept watching her for reassurance, but her eyes were shut and her head thrown back as unimaginable sensations took over her body. Taking this as a good sign, he practically attacked her neck with his mouth, peppering it with kisses and sucking on her skin as he added a second finger.

"This feels so good, Steve." She told him, barely able to get the words out as something powerful built up inside her. No one had ever been able to get her off like this before, and considering it was her first time, she'd had her expectations low to begin with. Now, as her organism approached fast, she lost herself in the pleasure that he was bringing her. "So, so good."

He bit the area of her neck that met her shoulder, and felt her tremble under him. "You are amazing." He choked out, and added a third finger, enjoying how she felt as she pulsed around him. Never in a million years could he have guessed that it would ever feel like this, and this was only the beginning.

Her hands swept over his cheeks, pulling him back up to her desperately as her climax approached. "Use your thumb," She encouraged, feeling his other hand move up to brace her back as she continued to wraith against him. "Rub me with your thumb, Steve, at the same time."

Following her advice, Steve added his thumb to the mix, rubbing that little nub of hers as his fingers continued their movement. Natasha practically screamed in his ear a few seconds later, and even more wetness coated his hands. He'd heard about a woman's orgasm, but he felt a sense of pride in knowing that she had brought her such pleasure.

She quivered around his fingers as wave after wave raked her body, and he didn't remove his hand from inside her until she collapsed down onto him. His fingers were coated with her juices, and Natasha almost died of a heart attack when he raised them to his mouth and licked himself clean of her.

Her head fell to his shoulder as she fought to regain her breath. That had easily been one of the most intense orgasms she had ever experienced, and definitely the best considering the method he'd used to reach it. She couldn't help but feel impatient to know what having him inside her properly felt like, and the fact that this was his first time just added to that excitement. Imagine what it would be like after a few more tries…

"Was...was that okay?" Steve asked, suddenly sounding nervous again.

Natasha raised her chin and kissed him, tasting herself on his lips and groaning in desire as a result. "That," She said firmly, so he believed her. "That was incredible. Thank you, Steve." She'd never, ever thanked someone after a sexual act before. Never once thought she ever would do such a thing. But how could she not, when he had just made her see stars with just his fingers? Excitement and desire pooled inside her at the thought of how other parts of his body would make her feel.

She straddled his waist, practically naked apart from her lacy panties, and she wiggled slightly. His length pressed against her thigh, firm and ready, but still confounded in the prison of his pants.

"Would you like me to return the favour?" She asked him, looking up at him through her eyelashes.

Even though it had been her who had been brought over the edge, Steve felt as if he was floating right now. Her question, however, brought him back to reality, at the practically naked goddess in his lap, looking up at him with a fire burning in her eyes. When her tongue snuck out to wet her bottom lip, he practically crumpled right there and then. His hands stroked her sides.

"W-would you want to?" He asked. All he knew about sex had been from listening to other soldiers discussing it whenever they planned what they would do as soon as they returned home and headed to the pubs. The thought of Natasha touching him made him blush, but that was overrun by the pulsing in his pants and his deep desire for her.

She smiled then, touched by his concern. "I want to." She confirmed, and said it with one hundred percent honesty.

He swallowed. "O-okay,"

His sudden nerves touched her, reminding her yet again that he was nothing like the men she had been with in the past. It wasn't just because she'd never been in a relationship before, so feelings had never been involved. It was also because although Steve clearly desperately wanted her, he would never make her do something just because he wanted it.

Therefore, she took her time.

As she continued to kiss him, her fingers worked on the buttons of his shirt, finally removing the piece of clothing from his body in one swoop. His perfect chest did not let her down, it was exactly how she remembered it. Honestly, you could probably get a papercut from those abs of his.

Her hands took their time admiring every contour and curve, and when she trailed a line of kisses down the middle of his body, Steve shook slightly, his hands fisting at his sides. Smirking triumphantly at the fact she could reduce him to such a state, Natasha sat back and continued her work of ridding him of his clothes.

Her hands discarded his belt, pulling it from it's keepers and placing it down on the floor by his feet. She wiggled off his lap slowly, kneeling down on the floor as her hands pulled the zip of his trousers down. Steve raised his hips to help her as she pulled both his trousers and his pants down in one fluid motion. As the unimportant clothes pooled at his feet, her eyes widened at her discovery.

He coughed, knowing instantly what had made her pause. "Yeah, um...the serum enhanced everything." He explained.

No shit. She practically drooled at the sight of his considerable length. He was thick, but not the kind of thick that made you wince in discomfort. She'd never seen a cock so beautiful, but she didn't dare voice this opinion out loud just yet, not when he was just finding his footing with the whole sex thing. He'd probably go the same shade as a tomato if she said such a thing right there and then.

He'd definitely, however, ruin anyone else for her, that was for sure. The fire between her legs was back instantly as she regarded him in his full glory, but she pushed her needs aside. This was about him.

She moved to sit at his side, pressing into him and leaning over as her hand gently took hold of him. He pulsed under her touch, hot and ready, and even when she stretched her fingers couldn't wrap around his girth. Steve's breath caught in his throat as she touched him, and she leaned up to kiss him. As her hand started to move up and down, his fingers threaded threw her hair as he hungrily returned her kiss, tongue plunging in her mouth.

"God, Nat." He choked out against her, as her hand continued to glide up and down. "Don't stop. Please don't stop."

She smiled slightly at the fact he was still respectful, even when she was touching him like this.

With her spare hand, she lightly ran her nails over the softness of his inner thigh, drawing small circles and random lines. Steve's pants and whimpers drove her on, and she bit his earlobe playfully while still stroking his length. God, she couldn't wait to feel him inside her, stretching her and hitting her in all the right places…

As her hand went up, she squeezed, and her thumb brushed over the head of his cock, which had a bead of pre-cum dripping down it already. She smeared it over him, making it easier for her hand to slid up and down quicker. As her pace increased, so did Steve's panting, and hearing her name fall from his lips in such a delicious, desire-driven way had her aching for him all over again.

"Natasha, Nat, Natasha-" He chanted her name with each movement of her hand. His head was thrown back against the back of the couch, and when she looked up and watched him, she had never seen such a beautiful sight. He looked like a fallen angel, coming apart under her touch.

Considering this was his hand job, he held out a little while longer than she expected. His brow was furrowed, and she knew he was purposefully trying to hold on for as long as possible. His teeth sank into his bottom lip, and she suddenly understood why he often chided her for such an action. Pair it with the way the vein in his neck was throbbing and how his head was tilted back, it was one of the sexiest sights she'd ever seen.

So, feeling devilish and simply because she wanted to watch him fall over the edge, she reached up to whisper into his ear, "Come for me, Steve." Her tongue traced over the outline of his ear.

That seemed to do the trick. His body shuddered and her name came out as a breathy moan from his lips as he gave into the build up of pleasure that she had brought to him. His cock throbbed in her hand, and his hot cum burst from his tip. Deciding give him the best first experience of his life, Natasha leaned down and engulfed him in her mouth.

That was one way of ensuring there was no mess.

If he hadn't tipped over the edge before, as soon as her mouth enclosed around him, Steve lost in completely. "Natasha, fuck!" He gasped out at the sight, his hand gripping the arm of the sofa as his entire body convulsed powerfully.

Smirking, she waited until he was finished before she removed her lips round around him, her tongue wetting them as she blinked innocently at him. "Such terrible language, Captain." She teased. "What am I going to do with you?"

The sound that came from him then could only be described as a growl as he flipped them over and kissed her. The fact that he didn't mind tasting himself on her turned her on even more, if that was even possible. She felt ready to burst there and then.

With her back pressing into the sofa and Steve now pressing into her thighs, Natasha lifted her hips up purposefully. She was shocked, but delighted, to feel him that had already bounced back and was stood on full alert again. It probably wasn't what that scientist had thought of when developing the serum, but she was thankful for it nonetheless.

But, before she could even so much as ask if he wanted to leave it at that for the night, Jarvis sounded almost apologetic as the system warned, "Mr Stark and Mr Wilson will be arriving in ten minutes."

Ten minutes was not long enough. Natasha sighed with frustration, and when she heard Steve chuckle, she realised he was just as annoyed as she was that their night would have to end.

But, he kissed her gently before saying, "Thank you, Nat."

No one had ever thanked her after such activities before, and they hadn't even had sex, but Natasha couldn't help but glow under the effects of his words. As she looked up at him, she bit her lower lip at the sight of his muffled hair and flushed face. God, he was irresistible.

But, soon enough, their friends would return, and here she was, practically completely naked, lying between a sofa and a definitely naked Steve Rogers. So, she looked up at him with a smile and said, "I'm going to find a way to get them both out of the tower again, as soon as I can."

He laughed. "I'm counting on it." He said, and she was pleasantly surprised at how confident he was, considering he wasn't wearing any clothes.

Giving her a little peck on the mouth, Steve stood and pulled on his boxers and trousers, with Natasha shamelessly watching his every move. She rose to her feet slowly, searching for wherever he had put her bra. It was slung over the arm of the sofa, and she put it on before grabbing her dress. She didn't have to ask Steve to help her with the zip, he was standing behind her before the material was even above her hips. As he pulled the zip up, he kissed her neck slowly before easing her hair back from over her shoulder.

She turned to face him, just as he finished doing up the last buttons of his shirt. Brushing his hands away, she undid the first three buttons again and ruffled up his collar. "There, all devilishly handsome again." She whispered.

He grinned, his arms wrapping around her waist. "I had the best time tonight, Nat, and not just the…" He trailed off, struggling to word what they had just done.

Saving him the trouble, she smiled and said, "Tonight was perfect."

His grin widened. "I'll see you in the morning."

God, she didn't know how she would be able to make it through tomorrow now, knowing exactly what lay under those clothes of his. Today has been hard enough. But, she cupped his cheek and said, "See you in the morning," Before kissing him goodbye.

Part of her was tempted, as she stepped inside her own floor of the tower, to go back upstairs and tackle Steve down on his bed. The thought made pleasant goosebumps appear on her skin, but she had to push away the temptation. They had both agreed that their relationship remained private, which meant they had to be careful. They were going to take this slow and enjoy every moment.

As she settled into bed that night, she fell asleep with a very satisfied smile on her face.

~0~0~0~0~0~

It's finally time to add a bit of spice to this story! ;)

- E x