Since there's no way we can escape it, here's the legal stuff :
I don't own Gundam Wing and its characters, they belongs to people who make less spelling mistakes than me... This fic (for those who don't know what NC17 means...) is a lemon, which means it contains graphic sex. So if you're under 18, or offended by that, I highly recommend you don't read it. (Anyway, I know you can read despite the warning, but don't cry if you're caught reading this by your mommy!)

Recipe III : The big mess
 
 
 

              It was the sound of voices and the sight of the light in the corridor, which projected thin rays of yellow light on the bed and the walls from under his room's door, that woke up Heero. He pushed the covers precautiously, to avoid waking his sleeping angel...
But... But wait... A quick glance at the left side of the bed informed him that there was currently no sleeping angel, moreover, the temperature of the sheets indicated that it had been quite a while since the sleeping angel had left. He thought to a kidnapping, first, and was about to take his gun in the drawer when a far more disturbing - and far more plausible- thought entered his mind. He crept silently out of the room, clad only in his boxers, and tiptoed towards the library, where the noises seemed to come from.

He hid behind of of the heavy doors and peeped inside. His heart skipped a beat. The first thing he managed to spot in the semi darkness was Quatre, his shirt partially unbuttoned and out of his pants, with a very discheveled Hilde clinging possessively to his neck. He seemed to be talking to two unknown figures lying on the ground, in a rather... undignified position. He couldn't repress a smirk, though he knew that, at the precise moment, it was a -very- good thing that Duo was a heavy sleeper. He was about to go back to bed, considering that he should left those 'matters of the hearts' to Duo, Hilde and Quatre, when he remembered why, exactly, he had woken up...

A second scan of the library, once his eyes were used to the dark, allowed him to see more clearly the two other figures.

His heart skipped two beats.

His angel was currently lying, half naked, legs spread and slightly sweaty under... Trowa??!!

In such a moment, one could think that common sense and cold blood are the more useful tools. In Heero's case, one can be wrong. The maddest parts of his mind told him to tear out Trowa's head with a tea spoon. His common sense told him to shoot him in the knees... What a dilemma. He eventually decided himself for the gun and was heading towards his room to terminate the Heavyarms pilot in a long and painful way, when the cold blood finally took over. And, probably one of the most perverted thoughts he had ever had, crept to his mind.

He was picturing Quatre... Quatre, who would certainly have solved the matter in a far more subtle way.

He considered denounce Quatre to Duo for a while, in order to ease his anger and his frustration by a memorable blood bath,  but he dismissed the thought, feeling grateful to the blonde for having inspired him a plan that could only described as sheer genius...

Oblivious to Heero's presence, the culprits were still blinking at each other in the library.

"Oh... my... god." Hilde stated.

Relena hid timidly behind Trowa -who was still decently dressed- and turned beet red. Eventually, it was Quatre who first initiated a sensible conversation.

"Uh... Well... I guess we're all in a... Uh... Embarassing position." He started.

"You think so?" Trowa said ironically. He looked Quatre right in the eyes, then his eyes travelled further down, and he smirked slightly. "... Embarassing... That's the word."

Quatre turn redder by the minute when he looked down too, understanding what he meant. Hilde just giggled, but she suddenly regained her composure.

"I think what Quatre meant was that we need a rule!" She explained, still playing with the last buttons of Quatre's shirt all the while.

"A... Rule??" Relena asked shyly from Trowa's back.

"Yes! See... We don't tell anyone, you don' tell anyone! And we can have our fun!" Quatre's shirt fell on the floor with her last words, which caused Trowa to wonder if they would have to fight to 'keep' the library and finish what Relena and him had begun. 
He breathed a sigh of relief inwardly when he saw Quatre pick up his shirt, and grab Hilde gently by the shoulders.

"I think we better go to bed, now..." He whispered.

"I think too!" She said, grinning from ear to ear, her hands already fumbling with his pants.

"... Please... We're not alone... And that's not what I meant.  It was close... Tonight. We should just sleep and... Uh... have a break." He blushed inwardly, thinking that they were -really- not alone and that there was naked former Queen of the World in his library.

Hilde pouted, but she understood that he wouldn't be up to this night, so she just turned to Trowa. "Do we have a rule?"

He nodded, and with that, Quatre and Hilde silently left. Their frustration was obvious, but it become almost unnerving when, after a few minute of walking in the long corridors, they heard passionate moans coming from the library.

"The whole house could hear..." Quatre murmured worriedly.

"They would deserve it! " Hilde snapped while re-buttoning her pajamas.

They reached Duo and Hilde's room and Quatre bent down to kiss her goodnight on the forehead, but she seized the occasion and found themselves lost in a slow and very explorative kiss against the door. Quatre coul hear Duo's snores through the heavy wooden material and it seemed to make the kiss only more exciting. They finally separate their mouths to breath but he was still sucking slightly at her lower lip. The Horniest and fortunately, the farthest, part of his mind told him that he could take her right here, right now against the door and that Duo wouldn't even have a clue. But he chosed to be wise enough to open the door and push her in before he couldn't resist anymore...

Hilde sat herself at the farthest edge of the bed, and watched Duo sleep, snore or drool, whichever you choose. He was so cute, a real kid, she thought, and a tired one at that. She sighed, and turned a light on in the bathroom, she wasn't going to get much sleep tonight...

She started running herself a hot bath, while she tossed her pajamas negligently in a corner of the bathroom. She poured some lemon sentered bathgel in the flow of water and watched the bubbles slowly forming in the bathtub.
When the tub was full and the room was filled with a lemony steam, she let herself slip slowly in the warm water, closing her eyes. She remembered the events of the night... Trowa? And Relena? That was new, for sure... And pretty interesting, judging by the sounds and events she had witnessed...

She rolled the thought in her mind again and again, which only achieved to make her think to Quatre. She felt a renewed twinge of frustration, and groaned inwardly at how shy he had been.

'Well... He was kinda right' She thought. Finding it only more unnerving that she had been wrong.

She slipped further in the bubbles until her chin was under the water, and promised herself to get a second 'round' as soon as possible. She began to picture herself undressing him, slowly, oh so slowly, to drive him mad. She could almost feel the smooth skin and the tiny beads of sweat under her fingertips, hear him beg her to pleasure him. She imagined herself fondling, torturing the creamy flesh and those pink nipples. As if on a clue, one of her hands moved progressively, seemingly of its own volition, to rest between her legs.

She sighed softly and, as her other hand encircled a soft breast, she envisaged an attracting way of easing her... tension. She began moving her fingers slightly, rubbing her hardening nipple and her aching crotch at the same time, with the same rhythm. She gasped at the arising sensations, her heartbeat fastening, and slid a finger between her sensitive lips. It was soon joined by a second, then a third. But, as she moved them faster and faster, she found that it was nothing like having his fingers teasing her... Or any other part of his anatomy. It was nothing like having him... She moaned in pleasure and frustration, and eventually allowed herself to stroke her clitoris in light circles, wanting desperatly to come.
Soon enough, she was squirming in the tub, her eyes tight shut, increasing gradually the pace of her fingers and the pressure on the tiny, hardened nub, while her other hand was unconsciously squeezing her breast. Finally, she reached the climax she had been seeking, and she let out a series of incoherent, shaky moans, as her whole body jerked uncontrollably, soaking the floor with the water of the bath in the process.

As she relaxed in the water and let her breathing come back to normal, Hilde became painfully aware of the presence of two violets orbs, which, judging by the mischievous way they were staring at her, had patiently watched the whole scene...

Duo was standing in the doorway, his arms crossed, with that irresistible smug grin of his, and he was very... Awake. She stared at him for a while, her thoughts melting and spinning too fast for her. She couldn't deny it, he was definitively sexy. And the fact that he seemed to have any intention to pursue the fun was highly arousing.
And so was Quatre, but she didn't love him. It was... what was it exactly? 'A very good friend who makes you come very hard!', her inner voice suggested. She smirked inwardly at the thought, but it was true. Yet it was still quite complicated. She could have went on ranting madly about her two lovers for a while, but he suddenly leaned against the tub, lifted her and carried her to the bed over his shoulder before laying her on the covers without letting any possibility of escape.

She smiled and eventually decided that if she needed to think... Then she would think tomorrow. For now, the only thing left was to enjoy what he offered. And she did so.

"I soaked both you and the bed..." She noticed.

"Don't worry about that Babe... I'm sure we're gonna end up soaked anyway..." He answered with a groan.

As he pressed her in the matress, she notice that, on Duo, watching had the same effect than touching. And since he seemed as ready as she was, she didn't think it twice and pulled instinctively at his underwear, while he had momentarily sat up to take off his T.shirt and toss it on the floor.
She moaned sexily to encourage him as she felt him pressing between her legs. She started to undo his braid, as he devoured the nape of her nape, murmuring barely audible words, which seemed to refer to all the things he planned to do to her until morning...
She was almost done with his braid when she felt him guide himself slowly inside her, and all thoughts fled. She even forgot that she prefered doing this with his hair down. She let go of the strands of chocolate hair and clung onto his shoulders for dear life as he thrusted in and out of her, as deep as he could, groaning his pleasure in her neck with each move.
It was great. But it wasn't enough, she decided. She rolled him onto his back expertly and watched him for a few seconds, straddling his hips, feeling him go even deeper this way. He opened his eyes and looked at her questioningly But she quickly kissed him thoroughly to avoid his gaze, and started to move back and forth, contracting her inner walls to squeeze his grateful member all the more. He closed his eyes once again and held her hips in a tight grip as he lifted his back to meet her moves.

She began panting heavily, as well as him and suddenly, she felt him throbb, releasing liquid pleasure deep inside her with each spasm of his sweat covered body, and the sight, the feeling of his orgasm finally sent her over the edge, moaning helplessly...

"... Yes! QUATRE!!"

Despite his current state of complete ecstasy, Duo managed to sweatdrop.