A/N: GUYS! It's finished. It's only been a LITERAL decade later! THANK YOU for your support all these years. I could not have done it without the periodic prompting from the amazing reviews and follows.

This is the "M" update we've all been waiting for. Haha! Enjoy, all you faithful Royai lovers.

LUST

"Colonel–" Riza's voice clipped, as Mustang dipped forward, rolling open-mouthed kisses along the nape of her neck. His chest pressed urgently into her back, the weight inclining her forward to brace her palms on the desk in front of them.

"We can't–" Riza warned, sounding too breathless to be convincing.

Roy's lips continued to caress the delicate flesh of her neck, as he wordlessly glided a hand underneath the Lieutenant's black turtleneck. His warm fingertips smoothed upwards and across the plane of flesh, dipping beneath her bra.

Hawkeye stiffened, as a caressing hand molded against a soft, yielding breast. His hand played with its weight before his fingertips searched for its peak. An appreciative hum pushed past Mustang's lips, as he pinched and twisted a perk nipple between his fingertips.

"Colonel!" Riza arched against the jolting caress, nearly doubling over from the unexpected intrusion.

Mustang swiftly slid another hand down the front of her uniformed trousers, fingertips intently stroking the clothed heat, nestled between her legs.

"Wait," Riza panted, half-lidded and frantic, "We can't do this…" She straightened herself, settling her hands atop each of his own. Her protesting palms felt every flex, every pinch, and stroke of his passionate explorations. A desperate shiver rolled down her thighs, making it difficult to stand. "Colonel…"

"Riza…" Roy groaned as he pressed his front shamelessly against her. The firm, ungiving swell of his growing need was agonizingly teased by the soft, welcome press of her behind.

A small sound caught in Riza's throat, as Roy demonstratively pressed the solid, hidden weight of his manhood, firmly against her.

She could feel its heat, radiating through the cloth between them.

Roy continued his needy presses against her, a breathy plea issued forth from his lips,

"Riza...ah...Riza...please..."

Drunk in the feeling of his soft Lieutenant, and the pleasured promises beneath him, Roy's eager fingertips swiftly undid the fastenings of Hawkeye's belt. The woolen, military trousers of her uniform slackened, hanging precariously at her waist. Intent hands finished the job, gliding them over the curve of her hip, where they dropped with finality at her feet.

Hawkeye jerked with surprise at the escalation of their encounter. The emerging traces of her protest were caught halfway in her throat, interrupted by the sudden, heated contact of the Colonel's padded fingertips, as they dipped beneath the waistband of her panties.

Warm digits slid against the naked, slickened petals of her core before his caressing attention settled on the tiny, delicate nub, nestled at her apex.

"Colonel!" she gasped. Her thighs reflexively clamped against his hand.

Heedless of the impediment, he continued. Moistened, swirling caresses ruthlessly smoothed and circled against her clit, wresting sharp, pleasured gasps from the Lieutenant.

Roy exhaled heavily. She was alluringly wet, and the warm, slick velvet of her womanhood that smoothed against his fingertips elicited a deep groan from the back of his throat.

"...Riza."

The Lieutenant's palms slackened on top of his own, protests dying, moans slipping from beneath her lips.

As Mustang continued his intimate ministrations, he reclaimed a formerly occupied hand at the Lieutenant's breast and worked to free himself.

Working at his trousers, his member sprung stiffly in his hand.

Mustang's fingertips slipped the Lieutenant's underwear to one side, opening herself to his advance. He leaned forward, his nose inhaling her scented skin against the coil of her neck, as he began to ease himself into her warm, welcome heat.

Riza let out a low, keening cry, as Mustang slowly filled her. Upon reaching his hilt, Mustang groaned appreciatively, and he began his lustful cadence.

Roy moved with an earnest energy, in rhythm to the fingertips that continued to caress her tiny nub.

Riza's clit pulsed fiercely against the continued, ardent caresses of the Colonel's fingertips, clenching tightly against his rhythmic, filling thrusts. Riza gasped, shocked and overwhelmed to find herself swiftly reaching her peak.

"Oh...Colonel...please...I…ah!"

Inflamed by the sound of Riza's breathy, pleasured moans, Roy burned with an intensity that surprised even him. He was used to fire, but not like this.

"Colonel, ahh! I...I'm–!"

His thrusts and fingers continued fervently. Riza let out a keening cry, as she clenched and pulsed hard, swiftly bringing about his own painfully sweet, prolonged release. His back arched, as the intensity of his climax was aggressively milked by Riza's tight, pulsing core.

Riza let out an exhausted gasp, before uttering Mustang's name in a soft, gentle mantra.

"Colonel...oh Colonel…"

-x-

"Colonel. Colonel..? Colonel!" Riza prompted with irritation.

Roy jolted forward in his chair, turning to face the now, fully clothed, fully composed Hawkeye.

Her inquiring gaze intently read him.

"Huh?" Roy stared back, blankly.

Riza's eyes narrowed critically, "Did you hear anything I said, Colonel?"

"Huh?" Roy repeated again.

"Daydreaming." Hawkeye sighed, as she dropped a stack of papers onto his desk. She quirked an eyebrow, leveling an inquiring gaze.

Roy's eyes widened, seized by the paranoid reflex that Hawkeye had read every tawdry little detail that had previously overtaken his thoughts.

Nervously, he began to straighten the newly deposited stack of paper on his desk.

"It's still early. I haven't quite woken up yet."

Hawkeye looked unimpressed by his response.

He flashed a disarming smile, hoping to break her line of inquiry. "Lieutenant?" He cleared his throat before continuing, "Some coffee would be wonderfully appreciated…?"

Hawkeye maintained her silence, before nodding, "Of course, sir."

As the Lieutenant walked out of view, Roy pinched the bridge of his nose and sighed.

What he really needed was a cold shower.