With a low growl and a rapacious look in his eyes, Tony grabbed Ziva forcefully by the waist and thrust her onto the bed. She gasped, causing him to growl again. He took in the sight of her, splayed out there naked before him on top of the sheets, breathing quickly, waiting for him to make the next move.

He had to control himself. Remind himself that this was just for show. Convince himself that those looks Ziva was giving him were all just a part of the act. He couldn't be the one to take things too far. After all, he was dealing with a woman who was skilled in the art of torture. He didn't want to get on her bad side. But he still had a difficult time telling if she really wanted it, or was just a damn good actress.

He began removing his slacks, keeping his eyes on her. She was watching his fingers intently, as they undid the button and slid the zipper down. Her gaze remained fixated there when he finally pulled the pants down past his waist, letting them fall around his ankles before kicking them to the side. He knew that his arousal was painfully apparent now, covered by nothing more than a thin pair of boxer shorts. He knew Ziva was looking. He swallowed hard, and couldn't help the blush from creeping into his cheeks or the embarrassed smile from twitching at the corners of his mouth. He felt compelled to apologize, wanted to cover himself with his hands, or excuse himself for a minute so that he could calm down.

But they were too far into it now, and he had to keep up appearances for the sake of the mission. He still couldn't believe that he was on the clock for this.

He paused, tried desperately to regain his composure. He closed his eyes and ran through his list of distractions in his head again. Basketball. Movies. Gibbs. And then he heard Ziva's voice, soft and seductive.

"Aren't you going to join me?" she purred.

Tony practically trembled. He nodded, and then moved to join her on the bed, slowly climbing over her nude form, careful not to press his aching need against her. He watched her for a moment as she ran her hands all over him; down his back, across his chest and torso, up and down the muscles of his arms. He leaned in to kiss her deeply. Her hands moved to firmly grab his ass, and his hips lurched forward against his best efforts. He stopped himself though, mere centimeters away from pressing into her. Even though he so badly wanted to grind himself against her, to relieve some of the pressure he felt building throughout his body.

He had to get them under the sheets. He knew that if they remained out in the open like they were that it would be difficult to disguise their simulation as real. And as far as Tony was concerned, it was still only an act. He couldn't afford to be wrong about that. He removed his lips from hers so he could speak.

"It's a little cold in here, don't you think?" Tony lied. His body was on fire. "Want to get under the covers?"

Ziva smirked, and agreed with a simple, "Yes."

The pair scrambled under the sheets, throwing decorative pillows and unnecessary layers of blankets to the side. Tony reassumed his position over her, his hands now in her hair, cradling the back of her head as he leaned on his elbows. Ziva leaned up to kiss him immediately, her fingers scratching at the hair on the back of his neck. When she finally broke away from his lips, she gazed into his eyes, silently asking him to take the next step. The breath quickly escaped from Tony's lungs.

He reached one hand in between them, down below his waist, to make it look like he was freeing himself from his boxers. He hovered his hips just above hers, and imitated the motions of positioning himself at her entrance. He then looked at her, wordlessly telling her that this was it, time to put on a convincing show. Ziva simply smiled seductively. He kept eye contact as he finally thrust forward, careful to get close enough without getting too close for his own good. And it was a good thing, because she surely would have felt his dick twitch against her when he heard that beautiful gasp spill forth from her lips.

Tony moved again, and again, each time reveling in the noises coming from his partner's mouth. He didn't care that they were just for show, because damn, was she convincing. He started to moan himself when Ziva scratched her fingernails down his back. The sight of her was stunning; eyes squeezed shut, lips parted, with a ghost of a satisfied smile. He couldn't help but moan a little louder, but thrust his hips forward a little faster. His head fell forward, and Ziva responded by flicking her tongue against the sensitive part behind his ear. Tony groaned again, louder still.

"Oh, fuck…" Tony cursed. He fought to remain in control. He wanted so badly for this to be real. He bet that she would feel incredible, warm and wet around his cock. He bet that she'd like it if he reached between them to work her with his fingers while he was deep inside her. He bet that she would scream for real, that her body would lurch into his and her muscles would flutter around him when he brought her to her peak. The throbbing in his boxers became almost unbearable at the thought. His thrusts became more frantic as he struggled to maintain a safe distance.

"Yes!" Ziva hissed, responding to Tony's increased speed.

"You feel so good…" he gasped. He assumed that that wouldn't have been a lie. Ziva slid her feet closer to her, bending her knees and opening herself up to Tony even further.

"Yes!" she moaned again, louder this time. "Yes, right there…"

Tony continued his pace, shuddering every time Ziva begged him for more. This was torture, he decided. Worse than anything Ziva could have come up with. And every time he tried thinking about basketball, or movies, or the disapproving glare of his boss, Ziva would moan a little louder, or fiercely whisper dirty words of encouragement in his ear. Tony cursed silently as he felt his pre-cum starting to stain the front of his boxers. He couldn't believe that that was happening, considering Ziva hadn't so much as laid a hand on him there. But he was desperately horny, and he couldn't stop it. He just hoped Ziva wouldn't notice. He had to end this, before he exploded.

"Come on, baby," he rasped. He reached his hand down between them, and started rubbing the inside of Ziva's thigh, as if his fingers had gone where he had really wanted them to. Ziva took the hint, and gasped, and started to tremble. "Yes…" Tony encouraged. "That's it. Let me feel it. Let me feel you cum."

Ziva practically screamed as she made her body convulse, clutching Tony close. He couldn't help but watch her, because oh God, this is probably what she looked like when she came for real. And he couldn't stop the groan escaping from his lips as he buried his face in her neck and trembled himself, his hands fisting in her hair and his body slowly jerking to a halt.

They remained there for a moment, Tony heavy on top of her, still painfully aroused. Both were breathing heavily. Ziva reached behind her head for the stereo remote and turned on some loud music, knowing that it would make it easier for them to talk if they were in fact under surveillance. Tony lifted his head at the sudden noise.

"Do you think they bought it?" Ziva breathed.

Tony grinned. How could anyone not have? "I did," he beamed, his face moving closer to hers, hoping for another kiss. Her lips still looked so tempting.

"That's fairly obvious," Ziva remarked. Tony moved his head back, looking at her seriously.

"For your information, that's my knee," he said. Which wasn't entirely a lie. He had been careful not to press himself into her. At the current moment, it was just his knee that she was feeling in between her legs.

"Whatever," Ziva dismissed. She had seen the bulge in boxers. Even if it was just his knee he wasn't kidding anybody. He was clearly still hard. She looked at him pointedly. "You can get off me now."

Tony did not want to comply. He was so close to having all of her, he had seen her unravel, and he was past the point of leaving it at just that. He wanted more.

He looked at his watch. "It's only been ten minutes," he noted, taking the opportunity to quickly glance down at her chest. He couldn't get enough of the sight of her. Especially since Ziva seemed so eager to end their charade all of a sudden. But he wasn't about to let her go. She had urged him on the entire time, after all. Why she was suddenly running scared was beyond him. "I have a reputation to protect," he insisted.

Ziva shook her head. "We're not even sure if we're under surveillance yet, Tony."

Tony started to move over her once more. A gasp escaped her, and her lips parted. "You can't be too careful when you're undercover," he asserted, noticing how she continued to play along, how the mischievous glint flickered back into her eyes. Yes, this was perfect, he thought. This was what he wanted. "Let's give it another 40 minutes," he strained. "Just to be realistic."

"Realistic, huh?" Ziva teased.

"Uh-huh." Tony gave her a racy smile, which Ziva immediately returned.

"In that case…" Ziva trailed off, barely giving Tony time to ponder what she was thinking before she grabbed his sides, locked her legs around him, and pushed, rolling them both over. Tony gasped, breathed heavily as he pushed her hair out of her face and held on to the back of her head, his own face showing a mixture of shock and obvious arousal. Ziva settled over him gracefully, and twisted his hair in between her fingers. "…I prefer it on top," she breathed.

Tony caught his breath and grinned, because yes, this was in fact perfect. She was playing the game right along with him again. "I can live with that," he said between breaths.

Ziva leaned back, her hips moving closer to Tony's, when she felt the tip of the hardness in his boxers that he had been fighting against the entire time. Tony couldn't help but involuntarily jerk upward at the contact, making it even worse; it was the closest she had actually come to that part of him this entire time and he couldn't stop his body's reaction. Ziva paused, and upon realizing what was happening, she immediately swatted Tony in between his legs.

"Ohhh…" Tony squeaked, eyes wide. God… that hurt. He was sensitive enough there as it was after all of this time with no release. He swallowed hard. "What was that for?"

"Because that," Ziva started, slowly bringing her eyes to meet with his, "was definitely not your knee."

And then, out of nowhere, she leaned in a planted a kiss firmly on his lips, eyes open, keeping contact with his stunned gaze. When she leaned back again, her eyelids narrowed, and her head tilted, and Tony breathed sharply. She was giving him that look again. That predatory, "fuck me" look.

Tony was beyond confused. She had just told him to get off of her no less than a minute ago, just thwacked him for being aroused. But she had also been the one to roll them over, to settle on top of him, and now she was looking at him like that. Now she was leaning in to kiss him again. But this time, Tony stopped her, fighting every urge that was telling him not to, to just enjoy what he could get out of this without ruining it.

"Wait, wait, Ziva…" he groaned. She looked down at him, perplexed. "You can't… I mean… you just can't… you're confusing the hell out of me, here." Ziva just continued to look at him, letting him stumble through his words. "I mean, one minute you're all into it, and then you want me to get off of you, and then you're into it again, and then you're punching me in the dick for Christ's sake, and now you're into it again. I… fuck, Ziva, what am I supposed to do? Tell me. Tell me what I am supposed to do."

"We are supposed to be convince—"

"—No, no, don't give me that. I know what our job is. I want to know what you want. What do you want me to do?" Tony asked firmly.

Ziva was silent, refusing to meet his gaze now that she had been confronted with the question she had been avoiding for two whole days. "I don't know," she finally confessed, her fingers absentmindedly playing with the hairs on his chest. This answer was not good enough for Tony.

"Do you want to stop here?" he pressed her. She slowly shook her head no, running her hands down to his stomach. He took in a shaky breath. "Do you want to keep going?" he asked. It took her even longer to respond to that question, but eventually she gently nodded her head, moving her hands to the trail of hair below his belly button. He inhaled sharply. "Do you want to do this, Ziva? For real?" he nearly whispered. And he waited for her to move her head, to show him some kind of affirmation or denial. But her head did not move, just her hands, which slid lower, sneaking their way just under the waistband of his boxer shorts, following the light trail of hair dangerously close to his attentive dick. Tony moaned and swallowed roughly, squeezing his eyes shut. "Do you want to touch me?" he muttered, barely audible. Ziva continued to let her hands do the talking.