Title: Unstoppable
Authors: Lex's Lady & Mistress Ace
E-mail: vicedragonv@msn.com & rosewood@inreach.com
Feedback: It's the icing on the cake. We write because the story demands to be told. Feedback lets us know if we struck a chord with you.
Distribution: Our website, of course, www.fandomwriters.com. The list archives are welcome to it also. Anyone else, please ask first. We'd like to know where our fic is going.
Rating: NC-17 (eventually – or maybe quickly depending on the whim of the muses)
Category: Crossover, Romance, Angst
Spoilers: All of season 1 of Smallville and season 6 of Buffy: The Vampire Slayer
Pairings: Buffy/Clark/Lex, m/f, m/m
Disclaimer: We don't own the characters at all (however much we might wish we did). Buffy and all references to BTVS are property of the great god Joss Whedon, et al. Clark, Lex and the Smallville storyline belong to Miller-Gough et al. We're just borrowing them for a while. We promise to put them back unharmed and perhaps a little happier.
Notes: ** denotes internal thought, * = italics.
Summary: What if the Summers girls moved to Smallville? What if Buffy discovered that Clark had a secret and thought he could use a confidant?
Dedications: From Em: To Ace, for her never-ending support and her willingness to work on this with me. She writes both Clark and Lex in a way I could never hope to achieve, and I couldn't possibly have done this on my own.
From Ace: To Em for reminding me why I love Buffy. To Beth for being my Smallville watching partner even when the scripts were awful. To the whole Clark/Lex list for opening my eyes to the potential here. And finally to Christina for her great story; Runaway Trains at 3 A.M. which was part of our inspiration. You can find it at: this site.

Chapter 7

When Buffy settled back down onto the bed, still quivering from the aftermath, Clark followed her. Much like he'd followed her ascension. He waited patiently until her breathing calmed before easing his fingers out of her. The slightly startled smile on his face probably matched her own. The satisfaction underlying that smile certainly did.

So lost in each other at that moment, they forgot about their companion.

Below them, Lex's head was bowed and he was curling in on himself. Tighter and tighter, the tension ratcheting higher and higher by the moment as he sought his own release. Eyes closed, lower lip caught between his teeth to stifle any sound, to keep from disturbing their afterglow. There was no need to involve them in this, he could take care of it on his own. What Clark had already allowed him was more than Lex had ever hoped for as it was.

Clark was the first to recover, to make some sense of the world around them. Therefore, it was Clark who caught the unmistakable sound of skin on skin. He glanced into the mirror above them, seeking its source. And there was Lex, his back to them, his body curled tightly in upon itself. His arm was moving, faster and faster.

Something deep inside Clark twisted up on itself. After a few stops and starts, Lex had been so open, so willing to share, so willing to teach. What had happened? Why had he pulled away from them when he should be sharing this too?

Not willing to accept Lex's withdrawal, Clark disentangled himself from Buffy and scooted down the bed to that tightly curled body. Time for a gentle reminder. He rolled Lex onto his back and covered the frantically moving hand with one of his own. Dazed grey eyes opened, startled and Lex made as if to protest only to have Clark shake his head. "No, Lex. You're part of this. Part of us... Don't pull away. Let us help you."

****

So close. He'd been so close, right there on the edge, ready to spill over and blessed release was taken away from him by a beloved hand. Staring down at it, then back up at Clark, Lex tried to form words that only caught in his throat.

Why was Clark shaking his head? What was Clark saying?

No.

No.

Not acceptable.

Absolutely not acceptable.

He couldn't. Not after having tasted heaven. Not after watching his angel and his god in holy communion. To force himself into that circle was blasphemy. He didn't belong here, not with these beautiful children.

He was only meant to be the teacher, not an equal participant. He didn't want to corrupt them.

Determined to hold to that ideal, Lex tried to crawl away only to be pressed back into the bed by Clark's broad hands and then Buffy's tiny ones. While he watched helplessly, Clark moved down the bed until his mouth was level with his cock. Soft lips, familiar eyes still so innocent despite the telltale silvering on his cheek. Too close, too close to absolute corruption. Too close to losing his soul and his life to the boy crouched between his legs.

"Lex, you promised..." Buffy whispered as she leaned down to kiss him deeply. She tasted Clark on his tongue and delved in deeper. The combined taste of Clark and Lex in her mouth was wonderful... and more than enough to jump-start her desire. She could go a very long time, through repeated orgasms... a thing they'd learn eventually.

"Tell us what you want, Lex," Buffy asked when she lifted away from the kiss. "Anything you want, you can have... you just have to tell us."

He was conflicted. Anyone with eyes could see that. But her quiet words soothed his fears and the honest offer opened doors Lex had always stood on the other side of. A lonely child standing outside the gates of paradise. Hands pressed to the bars, tethered there in the cold, unable to reach in and take what he wanted... what he needed.

And here it was being given to him. If he only dared to take it.

All he had to do was ask. Swallow his pride, swallow his fear and ask.

Lex shuddered, closing his eyes for a moment before he responded and when he did, his voice broke on the first word, "G-god... Anything. Clark... Buffy... please." There it was. The shattering of Alexander J. Luthor.

He was begging. His father would have him strung up for sounding like this but Lex honestly didn't care. He ached, the combination of tasting Clark's come and watching Buffy as she reached her own peak was too much. He needed... he needed so badly and he couldn't get anything more out of his mouth other than those few words.

Maybe Buffy would take pity on him. Clark, while he adored Clark and would follow him to the ends of the earth, Lex was sure Clark had no idea what to do here.

Or... he could be wrong on that score.

Apparently, Clark had some clue what Lex really wanted because the hand wrapped around Lex's cock tilted a little. Lex groaned, the sound rumbling up out of his chest when he felt those incredible lips slide slowly around the head of his cock. As he shuddered, his eyes fixed on the ceiling above the bed.

Time to count backwards from one thousand... in Greek.

He didn't dare look down. If he looked down, he'd end up coming all over Clark's face and that wasn't right. Not when Clark had gathered enough courage to be more than just a willing recipient. Those first hesitant touches, the light licks while Clark was probably acquainting himself with what was admittedly an acquired taste, the fumbled movements of his hand combined into a symphonic whole that transcended even the most skilled of Lex's former partners.

Simply because it was Clark.

****

Never in a million years would he have imagined doing this - not in a million, trillion years, but it felt right. Lex was bitter and salty but it was good. It fit him. The feel, the weight pressing against his tongue fit too. After a few experimental licks and figuring out the right angle, Clark sucked him in. Slow, short strokes, his mouth stretching wider and wider as he tried to imitate what Lex had done even though Lex was shaped completely different. Shorter and thicker than his own and the head was smooth, exposed, where his had a hood over it.

Clark knew why his was different than most guys. After an impromptu skinny-dipping session at the old swimming hole when they were kids, he asked Pete why they weren't the same and Pete explained to him about circumcision. It was accompanied by a lot of eye-rolling and burying his face in the cradle of his arms while he winced in sympathy over the whole process. Not that Pete really remembered getting cut, he was only a couple of days old but his parents told him he cried for three whole hours straight after it happened.

Okay, so maybe Pete exaggerated, but hey, that was Pete.

When he asked his parents why they didn't do it, they told him the doctor tried. He managed to get a needle into his arm to give his immunizations but when the doctor tried that, the scalpel broke. Right then and there, his folks asked him to stop. Luckily the doctor was one of his mom's cousins so nothing was ever said. It was of the first moments his parents realized just how different he was going to be.

What a way to find out.

****

If Clark hadn't dived right in, Buffy would have done it herself... but Lex's expression was one of someone who really thought he was in Heaven. And from what she'd seen earlier, she guessed that having Clark do this for him was something Lex had only dreamed of.

So she was content to let things go as they were. While Clark explored and experimented, Buffy mapped Lex's chest with her lips and tongue. Carefully. She couldn't move down too far without crowding Clark and she didn't want to disrupt his attention, so she mostly stayed where she was.

****

Oh.

Sometime in the last hour he'd died and gone to Heaven because this wouldn't happen in the real world. All he'd ever wanted, since the moment he woke up on the riverbank with his chest aching and sore, was this. One look at Clark's mouth and Lex's wet dreams changed forever.

Since that day, more often than not, he woke up calling Clark's name out in the dark while his body spilled semen onto silk sheets. To his credit, Damien chose not to comment on the return of his nocturnal emissions, which was probably why Lex paid him twice the salary any normal valet/personal assistant could expect to earn.

Rising up to meet Clark on each down stroke, Lex frowned the first time Clark choked and pulled back. Damn. It was hard to think about teaching when all he wanted to do was melt into the bed. "Don't take any more than you can handle, Clark," he said... or at least he hoped he said. Which he probably didn't because Clark gave him the oddest look.

He'd only understood one thing of what Lex said: his name. Otherwise the words coming out of his mouth were pure gibberish. "You want to try that again in English, Lex?" Clark teased. It was all he could do to keep from laughing as Lex's frown got deeper. He'd never call Lex cute, not his face anyway, but the confused expression was pretty funny.

Lex cleared his throat, trying again after a minute. "Don't take any more than you can handle. Ohhh... Buffy, that feels wonderful." This time the words weren't garbled. Lex was speaking perfect English, his tone gruff and slightly annoyed. That is until he cupped the back of Buffy's head and pulled her up for a kiss.

He'd been neglecting her. Her teasing little kisses and soft touches, much more skilled than Clark's, were just the right contrast. For that, and for so much more, she deserved his attention.

Buffy hid her startlement by kissing Lex back. Her kisses asked rather than demanded, but she used a couple of the tricks she'd seen Clark use so effectively. Just because she could. But part of her began to wonder if Lex could read her the way she could read him, because he'd pulled her up just as she was beginning to feel like perhaps she ought to just quietly disappear.

Now, though, Lex had a hold on her arms and was kissing her... and stopping would hardly make for any kind of 'quiet' exit. As long as she was wanted here, she would stay.

Sweet little mouth. Tiny and curved and damned close to perfect. Too small to take Clark easily but she probably could manage him. They could give that a try later. Right now, kissing was good... kissing was great. Lex stroked his tongue in and out, imitating what Clark was doing down below. Yes, Clark was inexperienced and he really needed to watch the teeth but one little hiss of pain and he covered them with his lips.

Lex didn't mind; pain had its place and it was an old friend.

Plus it was helping his whole control issue. If this was the only time he'd ever get with these two and given his relationship track record, Lex wasn't going to assume any permanence, he was determined to enjoy it to the fullest. A bit of pain would go a long way towards ensuring that goal.

****

Jeez, he'd scraped Lex with his teeth and the only thing he did was hiss and shake a little before thrusting back in again. Somewhere Clark had heard that was the worst thing you could experience during a blowjob and Lex barely even noticed. He felt the blush start to rise and tried to hide it by jamming more of Lex in his mouth, which resulted in a coughing fit. **Smooth Kent... You are the love machine.**

He could really use a little instruction here. But Lex was kissing Buffy and not paying that much attention. Which, yeah, Buffy's kisses were the best in the world but he was in over his head and Lex was supposed to be guiding him through this, wasn't he? Finally Clark figured out that he could just ask for help although it was embarrassing. After all, he'd only experienced his first blowjob a few minutes ago so how could they mind?

"Ummm... can I?" As soon as those words were out, Lex released Buffy and looked down, laser sharp focus all on him. Wow, spotlight time. Clark swallowed heavily, really not wanting to sound like a lame dork since both of them were so much better at this than he was. Or at least he assumed Buffy was better because she kissed great so she had to be great at this. Right? "Can I get a little help? I'm not sure what I'm doing."

"Of course," Buffy replied gently. After one final kiss, she moved smoothly to Clark's side to help him. "It just takes a little practice. You need to learn to relax the muscles in your jaw and throat... it'll make it easier. Here... put your fingers right here..." She took Clark's fingers and placed them carefully, one along the back hinge of her jaw and one lower, on her throat. "I'll show you what it feels like from the outside."

Lowering her head, she parted her lips and sucked Lex's cock into her mouth. As she slid farther down, she purposely relaxed her muscles until she took him all the way in. It felt to her like he was halfway down her throat, but she knew he wasn't actually. Slowly, carefully, she slid up and down a few times, letting Clark feel the way her muscles relaxed every time she went down.

Lex groaned in immediate response and appreciation of true skill. Where Clark's mouth had been inexpert and halting, Buffy's was talented. Someone had taught this girl well, had actually taken the time to walk her beyond the basics and give her a first class education. He wondered idly if he should look the guy up and make sure he was never going to show up here in Smallville.

He'd hate to have to kill someone.

Clark grinned, his fingers rested on her cheek as he watched Lex disappear into her mouth over and over again. Wow. So cool. And who knew that X-ray vision would come in handy here? Maybe not being normal wasn't that bad of a thing.

When she pulled back again and offered him a chance, Clark scooted into place, opening his mouth to let Lex back in. He checked his chin for drool, wiped it once for good measure as he wriggled happily into the soft comforter. The first blunt nudge against his teeth went really well so he relaxed his jaw and went slowly down for the first few inches. So far, so good.

He could do this, he could really do this. Getting back into the rhythm, Clark kept his head down, his teeth covered and breathed in through his mouth as Buffy watched him. If the noises Lex was making were any indication, he was getting pretty good at this. Just taking it slow and easy, or at least he did until he caught sight of himself in the mirror.

Which was far too distracting.

****

In the space of a heartbeat, Lex's whole world shifted. One minute, Clark was taking him nice and slow with steady pressure, just the right amount of tongue action for a prolonged suck that would leave him pleasantly sated and Clark relatively untraumatized. A perfect introduction to oral sex, a little vanilla but Lex was willing to deal because it was Clark down there.

More elaborate stuff could come at another time.

But not more than a minute later, there was a nose buried in between his thigh and groin and Clark was swallowing like a pro. Pulling back, taking him in again and again and swallowing every single time. Christ, he was good at this. Even better than that rent boy, Chris Something, that he'd spent several extremely entertaining hours with right before Vicki's dramatic reentrance into his life.

The rush was incredible, dizzying in its intensity. Throat tightening like a vise around him and God, his cock loved it. Loved it so much, it was ready to sign over half his worldly goods but that mouth was Clark and Clark, devoted son of Jonathan and Martha Kent, up-standing young citizen of Smallville, and in no way an expert in cock-sucking, his Clark shouldn't be *able* to do that.

Lex's eyes snapped open and he half-sat up, scrabbling at Clark's shoulders as he tried to pull Clark back so he didn't choke. His voice shook almost as much as his hands as the rush spread from all over to one specific spot. "Jesus fucking Christ!... Clark... oh God... I'm gonna come. If you don't... uhhh... if you don't want that.... godohgodohgod... Move, Kent. Fuck, just move..."

He didn't want to come in Clark's mouth. Well, actually he did but Lex was pretty sure Clark didn't want that. Or at least he should be given a choice in this matter. If was imperative that Clark be given a choice. After all, the first time he'd given a blowjob, Lex wasn't given a choice. His head was held in place and he'd almost choked to death before the guy was done.

Then he'd thrown up.

For what felt like hours.

He didn't want Clark's first experience to be anything remotely like that.

****

There was something about Kents that Lex just hadn't figured out. They were tenacious. Clark ignored everything except the order to move. He did that, going up and down, keeping his teeth covered while Buffy's little hand followed his actions. There was a strong taste in his mouth and, to his surprise, Clark liked it and wanted more.

A whole lot more.

Buffy followed Clark's movements with one hand while her other slipped down to fondle Lex's balls. "Clark, you don't have to stop, but listen to me for a minute. When Lex comes, you're going to want to pull back a little. You don't have to go far, but just enough so that you don't choke. I know he feels good, deep in your mouth like that, and I know you know that it feels good to him when he feels you swallow. But trust me on this one... it will be a lot easier if you listen. Okay?" Last-minute instructions, because she could tell Lex was coming close... and that he didn't want to hurt Clark, even inadvertently.

Smart girl... Okay, he'd marry her and buy her an island. Anything - because Clark was easing off and he was about to shoot and the last thing he wanted to do was make this unpleasant for Clark. Lex's fingers reached for Clark's hair and then veered off to grab the bedspread instead. It balled up in his fists, sweat slicking the fine fabric as Clark dipped down one last time, swallowed, his throat constricting around Lex's impatient cock and that was it.

White-out. Pleasure so strong he was flying. Better than any drug he'd ever taken, better than anything in the world... Because he was coming and Clark wasn't freaking out. He was taking it in, tongue stroking over the slit in between each jet and Jesus... he was going to marry them both. Right now. Today. To Hell with Ma and Pa Kent and the stupid Kansas sodomy laws and the stupid bigamy laws...

And was he actually saying those things out loud?

Buffy flat-out stared at Lex. He couldn't be aware that he was talking aloud... could he? Deciding to ask him later if he meant it rather than freaking now, Buffy cut off the stream of words by kissing him again. Deeply but gently, tangling his tongue with her own.

He couldn't really be serious. He was just incoherent from the moment and unaware that he was speaking his mixed-up thoughts. But he'd definitely thrown her for a loop... to her knowledge, no one... not even Angel... had ever wanted to marry her.

****

Okay, most of the guys he knew would have been grossed out at having a mouthful of come but Clark actually liked it. He liked the taste and the texture and it went down smoothly when he swallowed. Even the bitterness was pleasant. Considering he preferred his coffee black; bitterness was an old friend.

Plus there was the whole Lex turning into a puddle factor. Along with how smooth his skin was, which was, you know, seriously addictive. He could just pet Lex for hours and hours and hours and never get bored. Lex might but Clark was pretty sure he wouldn't.

Clark finally released Lex's cock when his friend made a sound of protest, probably because he was too sensitive after coming, which happened to Clark occasionally. It was practically the only time that Clark registered anything even close to pain. Well, unless you counted meteor rocks and the occasional run-in with a meteor mutant or the random lightning bolt. So, yeah, sensitive after coming given that each little lick had Lex shivering and trying to pull away a little. Good to know.

While he waited for Lex and Buffy to stop kissing, Clark rubbed his cheek along Lex's thigh and then across his stomach. Very deliberately avoiding Lex's cock even though he wanted nothing more than to drag it back into his mouth and okay, so he was obsessing and babbling in his head. But who could blame him?

He'd just had sex. For the first time in his life. Well, with other people...

If he'd been a cat, he would've started purring. As it was, Clark was humming to himself. Very pleased. He made Lex come... he made Buffy come. Clark Kent, total loser, had just made two incredible people come. He was the love machine... Oh yeah.

Buffy finally released Lex, sitting up with a small smile. She turned slightly to look at Clark and saw him snuggling contentedly with a big grin on his face. That broad smile was infectious and she grinned back at him with a wink. "Someone looks supremely pleased with himself. Did you have fun, Clark?"

No need to ask Lex how he was feeling just yet... he didn't look capable of constructing a coherent sentence, but he had a lazy smile that lit up both his face and his eyes. He looked younger, almost vulnerable, completely touchable.

Clark nodded vigorously as he moved up from his spot. He kissed Buffy gently, unconsciously sharing Lex's taste with her. Underneath them, Lex was content to remain a puddle of a human being. Which was perfectly fine with Clark. Melted Lex was much better than impatient Lex or curious Lex or just about any of the versions of Lex he'd known so far. Melted Lex didn't have any of the personal space issues that regular Lex had and that was cool because personal space between him and Lex right now was a very bad idea.

*****

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