A/N: This is the pg-13 edit of this story to get past this site's pg-13/tv-14 definition of 'M rating' which certainly doesn't stand for 'Mature' in any dictionary I've ever read. If you want the actual M-rated version of this story, go to AO3, same title, E-rating just to be safe since I get enough flames on age difference stories as it is.


The moment the elevator doors closed behind them and they were guaranteed to be alone, Bishop turned and threw her arms around her new boss, hugging him tightly.

The second before she did it, she had merely been so excited by his offer that she just had to hug him even if she knew in the back of her mind that he would frown upon it, but the moment her arms wrapped around him and their bodies pulled together, a spark shot through her body, reverberating from her head down to her toes, sending fire soaring through every nerve ending in her body.

She looked up into Gibbs' face in surprise, just to be surprised even more finding him staring back down at her looking like he'd felt the exact same thing that she had. They just stared at each other for several long seconds as the elevator started moving downwards, before Gibbs' arm shot out and flicked the well-used emergency stop switch. The elevator screeched to a halt with a suddenness that Bishop wasn't expecting causing her to lose her balance slightly, but before she could actually fall, she felt Gibbs' arms wrap around her and hold her up, as her own arms instinctively wrapped tighter around him where she still had him in a hug.

Once again as they pressed flush against each other, her body sent another jolt through her nervous system, lighting her on fire from the inside out.

As she gained her footing again, and was no longer in danger of falling without him holding her up, Gibbs' arms slid from around her back down to her waist. With little conscious thought involved, Bishop's hands responded by sliding from around his back to his chest, and then up to his shoulders before finally framing his face, thumbs resting on his cheeks. But just as she went to lean up on her toes to kiss him, he spoke.

"Rule number twelve."

Bishop stopped, not having really even started moving yet, but also not moving back at all from where she was.

"And I'm guessing rule twelve is not 'make out in the elevator with your joint duty assignment girl'?"

"Never date a coworker," replied Gibbs, his ever-present serious look back on his face as he continued staring down at her, but also not moving an inch from the positions that they were in.

Bishop continued staring up at Gibbs for several more seconds, neither of them moving a muscle. Finally unable to bear the tension between them any longer, in one swift motion Bishop pulled his face down towards hers and rose up on her toes to meet him. She was either going to get fired on the spot for this (or lose her joint duty assignment, as would actually be the case, though possibly fired from her NSA job as well if word of this got back to them), or he would toss his rule out the window like he'd already kind of done by not even trying to move after telling her the rule — if she was being honest with herself she figured that the first option was the more likely of the two — but either way, she was going to get her kiss in. And if he did remove her joint duty assignment offer, then maybe he would still do something with her since then they wouldn't be coworkers anymore, and therefore his rule wouldn't apply to them anymore, though she rather doubted that. But whatever did happen, she'd at least have this one kiss with him.

With all of these thoughts rushing through her brain as her lips locked onto his, it took her several seconds to realize that not only had he not pushed her away, but that he was actually kissing her back, and quite passionately at that. Throwing any remaining caution that she might have still had to the wind, she wrapped one of her arms around his neck to hold him firmly in place while the other tangled in his short silver hair, and deepened the kiss even further, prodding his lips with her tongue, asking for entrance. If she'd still been thinking at all by this point she would have been further surprised when his lips parted for her tongue, but as she was well past thinking by that point, she merely dove straight in, exploring his mouth with her tongue and battling his own for dominance of the kiss.

Eventually the need for oxygen broke them apart, and Bishop lowered herself back down off of her toes, but she kept her fingers locked behind his neck. For his part, both of Gibbs' hands remained resting on her hips, squeezing just tightly enough for her to know that they were still there without her having to think about it. They both breathed heavily for several seconds, trying to catch their breaths, and figure out what the hell they had just done. Finally, Gibbs broke the silence that had descended upon the stopped elevator.

"I don't do one-night stands. Three marriages and subsequent divorces, and a few other relationships that didn't make it quite that far, admittedly, but never one-night stands, and certainly not ones with women thirty years younger than me, who are quite literally younger than my daughter would be if she was still alive."

Bishop didn't say anything for several seconds, trying to parse everything he had, and had not, said, but finally when she thought she had everything figured out, she replied, "What about indefinite length relationships without any labels, then?"

When Gibbs didn't immediately reply, she continued on, "I'm single. I don't know about you, but I hope you would have said something before I kissed you or at least will now, because I don't have anything to do with guys who are married or already dating someone else. But assuming that that's not the case here, we clearly both felt a spark, or more like an inferno at least on my end, so other than rule twelve, what is there stopping us from doing this?"

Gibbs took a deep breath. "I assume it's pointless to reiterate that I'm thirty years older than you, old enough to be your dad, and possibly older than your dad?"

"I kissed you," Bishop replied with just a hint of a smirk. "Older men have never been my 'type' if I have a type, but you're different for some reason."

"And telling you that this is a terrible idea that will eventually end catastrophically, something that I know from personal experience, hence the reason for rule number twelve, isn't going to make you reconsider?"

It was as much a statement as it was a question, but Bishop answered it anyway. "Sorry — I've always been more of a hands-on learner."

Gibbs chuckled lightly at this, before leaning down and giving her a quick, soft kiss.

Straightening back up before she could try to capture his lips again, he hit the emergency stop button off and replied, "Then it doesn't seem like I'm going to be able to talk you out of it."

Feeling the elevator start to move again, Bishop removed her arms from around Gibbs' neck and turned to face back towards the elevator doors, so that they would be appropriate when the doors opened back up again on the ground floor.

Then, not daring to look at him as she did so, she hesitantly asked, "And my joint duty assignment?"

"You're safe," Gibbs answered as the elevator doors dinged open.

They walked through the nearly empty NCIS lobby side by side but far enough apart that no one would think twice, neither of them saying anything more until they were out into the parking lot, where Gibbs knew that they would really be alone and away from any prying ears that could get them in trouble with HR or Director Vance. The Director would have to be told eventually, and it was probably best for them if they did so before he figured it out on his own, but as much as Gibbs might have questioned her wanting of him, he didn't want it stopped before anything had even happened — for her sake, of course.

But once they were outside, as they walked through the shadowy parking lot towards their respective trucks, Gibbs asked, "Ever done a work relationship before, Bishop?"

"Dated a lawyer at the NSA that I met on my first day for maybe a month or so, but nothing ever came of it. And then work took me out of the country for a couple of years, and I've never got back into anything romantic since I got back stateside," answered Bishop. "But I know to never let it show at work, or I'll be fired quicker than anyone here can pull their gun. Basically, treat it like a secret affair, even though it's not actually an affair since both of us are single."

Gibbs raised his eyebrow slightly at her description of it, but as she wasn't really wrong, all he said was, "Good enough."

They walked in silence again until they reached Gibbs' truck, at which point he turned and asked her, "I assume you have a smartphone with maps on it?" At Bishop's nod he continued on, "You can follow me home, but I'll give you my address as well in case we get separated."

~NCIS~

Twenty minutes later they pulled up outside of Gibbs' house and walked inside, Gibbs holding the door open for Bishop to walk in first.

But as soon as Gibbs had closed the door back behind them, Bishop pinned him up against said door, forcing her tongue down his throat again. But that didn't last for too long before Gibbs gently but firmly pushed her away and said, "Upstairs. I am way too old to be doing this against a wall."

So Bishop grabbed his hand and spotting the stairs, drug him upstairs, looking around for his bedroom when she reached the top. Taking the lead, Gibbs led her into the closest bedroom, pushing the door open for her. Other than the bare bed, a small bedside table, and an empty dresser against the far wall, there was nothing else in the room.

"This is your—?" Bishop began in a confused tone as she looked around the sparse room, before Gibbs cut her off.

"No, this isn't my bedroom. I always sleep on the couch, which I figured you probably don't want to do this on, and I certainly don't want to and like the wall probably can't, at least not if I want to be able to move tomorrow, so this is the best I can offer. Long story about my real bedroom, not telling it at the moment."

Bishop nodded her understanding, so Gibbs continued on, "I've got sheets in the closet for the bed. Needless to say, this wasn't something that I'd planned on doing tonight when I left the house for work this morning."

Bishop smiled and chuckled at that as she watched Gibbs get said sheets out of the closet, and a few seconds later they had the sheets on the bed, just begging to be mussed up.

So Bishop promptly leapt up onto the bed on her knees, before shuffling across to grab Gibbs' face and pull it down to hers so that she could finally kiss him again, as it had been far too long in her opinion since she'd had him pinned up against the front door. As they devoured each other's mouths, Bishop wrapped an arm around his neck as her other hand tangled itself in his silver hair, whilst Gibbs' hands moved to the center of her back and pulled her flush against him. When they finally broke apart to catch their breaths, Bishop used his distractedness to fall backwards onto the bed, using her grip around his neck to pull him down with her. Gibbs pulled his arms out from behind her back just in time to brace his fall on his arms, and not crush her as he fell on top of her.

As Gibbs held himself over her, he suddenly said in what she would have considered an almost panicky tone if he had been anyone other than the stoic head of the NCIS MCRT, "I don't have any—"

"Pill," breathed Bishop, with the slightest of smiles ghosting her lips — if she wasn't so aroused at the moment, she would have found his definitely-not-panicking at realizing that he didn't have any condoms funny. "And I trust you're clean unless you say otherwise."

Gibbs nodded, so Bishop attacked his neck with her lips, as her hands pulled his polo and undershirt out from inside his belt. As she found the hems of his shirts, Gibbs shifted so that he was now sucking on her neck as Bishop began pulling his shirts completely off of him. When she reached his head, he broke away from her neck so that she could pull them all the way off. As soon as he was free, while she was still throwing his shirts across the room, Gibbs ducked down to her stomach, and slowly pushing her sweater up, began kissing the newly exposed skin. As his tongue dipped down into her bellybutton, she nearly missed his hands undoing her belt buckle and jeans button. But instead of pulling her pants down like she wanted, his hands slid the opposite direction back up her sides, exposing more skin that his lips kissed their way up.

Deciding that she was being far too passive for her liking, she suddenly flipped them over, leaning back and stripping her sweater off, leaving her in just the simple white bra that she'd put on that morning, not having planned on seducing the head of a team from a completely different government organization after work that evening. At the same time, she was grinding down onto his noticeably hard erection, which she decided then really needed to be freed from its confines immediately if not sooner. So she shifted back enough that she could undo his belt and pants, before crawling back even further to pull them and his boxers completely off of his legs. As she pulled them over his ankles she hooked her fingers in his socks as well, both having kicked their shoes off while making the bed.

But as she crawled back onto the bed over him and claimed his lips with her own again, Gibbs flipped them back over, pinning her to the bed beneath him. He broke free from her lips, and soon had his own lips trailing down her throat, across her collarbone, and then down the hollow between her breasts. He peppered the exposed skin with light kisses before eventually continuing his journey southward, leaving open mouthed kisses down her stomach as he went. When he reached the edge of her jeans he leaned back, hooking his fingers under her jeans and underwear. Bishop lifted her hips to help, and Gibbs pulled them both down together, ridding her of her socks as well along the way.

Then he placed his broad hands on the insides of her calves, before slowly running them upwards as he pushed out slightly. Bishop's whole body tingled as his hands ran up the insides of her sensitive thighs, but before they reached where she really wanted them, needed them, they slid up and over her legs to her hips. But before more than a whimper could escape her throat, he had dipped his head in, and she shivered in delight.

If she hadn't already been aroused from their very first kiss in the elevator, she certainly would have become now as he toyed with her. She was just about to groan out in frustration when suddenly, unexpectedly, he stopped just teasing her, and she lost it.

When she finally came back to herself, she grabbed his head and pulled him up for a kiss. But before she even had time to run out of breath this kiss, he flipped them back over so that she was lying on top of him again. Breaking their kiss she lowered herself onto him, pausing for a second to let herself adjust, and taking the opportunity to reach behind her and unclasp her bra, letting it fall down her arms and onto the bed beside them. As her breasts bared she could feel him twitch inside her, and she inwardly smirked.

Placing her hands on his chest, she began moving, slowly at first, and then faster and faster. Still riding the high from her first orgasm, Bishop quickly felt herself building towards a second. Underneath her she could feel Gibbs starting to tense up as well, and assumed that his own release was fast approaching.

"I'm not going to last long," he grunted.

"That's — fine — almost — there — !" she panted out in return.

A few strokes later they tumbled over the edge together. As they came down from their highs, Bishop found herself lying on top of him in a sweaty, boneless heap, his arms loosely wrapped around her back. After a little while, Bishop shifted up slightly to slide off of him.

As Bishop shifted around to get more comfortable, she heard Gibbs say quietly, "If you were hoping for a quick turnaround to round two, I'm afraid you picked someone a little too old for that."

"Oh, no, I don't think I could go for another round right now even if I wanted to!" Bishop hurriedly exclaimed to ease his worry that he couldn't satisfy her. "I'm about to fall asleep, and I was just trying to get a little more comfortable."

Gibbs only gave a small grunt in reply, but Bishop could feel him un-tense beneath her at hearing that she wasn't disappointed in him, as she snuggled a little deeper into his chest, feeling his fingers begin to gently stroke her hair as she drifted off to sleep with a smile on her face.