A/N: This takes place somewhere in the "What We Choose to Become" series, post dragon-war, but it didn't really have a place in the story.

"Holy...f-fucking h-helllnggh." Gray panted, his voice embarrassingly high and shaky. His bare chest was covered in a thin sheen of sweat, and he braced himself against the wall behind him with a trembling hand. His other hand was currently fisted into thick, pink hair. He tugged at it, hard enough to make Natsu groan. Which wouldn't have been a problem if his mouth wasn't currently wrapped around Gray's dick.

The vibration, combined with the heat and slick wetness, made Gray cry out and slam his head back into the wall, jerking his hips towards Natsu. A set of warm, soft hands pushed his hips backwards, then Natsu lay his arm over Gray's stomach to keep him in place. The other hand dragged blunt nails down Gray's right side, tracing the sensitive scar and then dipping around to grab Gray's ass.

"Oh my gods... fuck, Natsu." Gray growled and looked down at Natsu, whose head was bobbing as he did something ridiculously good with his tongue. "Look at me." Gray tugged on Natsu's hair again, forcing his head back until he met Gray's lust-filled gaze. Natsu's eyes were wide and soft and his face was flushed almost the same color as his hair. He let Gray's cock slide out of his lips, then licked a thick line down the underside of it until his face was nuzzled in the crook of Gray's thigh. He nipped gently there, coaxing Gray's leg up until it was resting on Natsu's shoulder.

Gray cursed softly as Natsu's tongue found its way further downward, pressing hot kisses and licks over the sensitive area and stopping just before it reached somewhere that Gray had never expected to be touched. Gray whined softly, rolling his hips to encourage Natsu. He felt a soft puff of laughter against his skin, then the hand across his stomach disappeared and found its way to his cock.

"Can I?" Natsu's breathless question made Gray squirm. He felt so exposed – leg up over Natsu's shoulder, leaning against their bedroom wall, head thrown back and embarrassing sounds slipping from his lips. He nodded, breath catching in his throat.

"Fuck, yes." The words were barely out of his mouth when Natsu's tongue swiped over him, soft and hot and holy shit that felt amazing. Gray moaned, bucking his hips into Natsu's hand and being rewarded with a tortuously slow pace of being stroked and licked. Gray knew that Natsu was an amazing kisser, but apparently that wasn't the only thing he could do with his tongue. It swirled and explored insistently, dipping inside and then swiping across him in hot, wet strokes. Gray's fingers were almost white in Natsu's hair, and his knees were beginning to buckle.

The wet heat suddenly withdrew and Gray whined, but Natsu merely wrapped his arms carefully around Gray's waist and lifted him, earning him an indignant yelp. The embarrassment was quickly forgotten when Natsu threw Gray down onto their bed, then leaned over him possessively and began to bite Gray's neck. A hand replaced where his tongue had been, fingers tracing curious circles as he began to nip and lick at Gray's collarbone.

"Okay?" Natsu whispered in Gray's ear, biting down on his earlobe. Gray groaned, turning to catch Natsu's lip between his teeth and pulling him into a bruising kiss.

"Please," Gray begged, and his voice was so perfectly wrecked that it sent a shudder through Natsu's body. He brought his fingers up and slipped them over Gray's lips, grinning at the look of surprise on Gray's face.

"Suck," he whispered, leaning down and pressing himself against Gray's hip, grinding there as Gray's eyes widened and he began to run his tongue over Natsu's fingers. Natsu groaned, biting his lips and envisioning that tongue somewhere else as he rocked against Gray. The way Gray's eyes bored into him as his lips locked around Natsu's fingers had Natsu fighting the urge to come right then and there. "Up," he gasped, swallowing heavily and moving himself in between Gray's legs. He pushed a knee up on his shoulder again, then leaned down and took Gray back into his mouth as he returned his fingers to Gray's entrance.

"Fuuuuuck," Gray groaned, fisting his hands into the sheets as Natsu slid a finger gently inside him. Natsu hummed around his cock again and Gray made an incoherent noise of pleasure, rocking himself down onto Natsu's finger. This felt amazing. Why had they never done this before? Fucking was so much better than fighting. Gray's hands found their way back into Natsu's hair and tugged.

Natsu tensed and moaned loudly when he felt the exquisite almost-pain of Gray yanking on his hair. He slowly slid a second finger inside Gray, humming in satisfaction when Gray arched himself off the bed at the sensation. Natsu had originally planned to take this slow, but Gray's fucking face, and the noises, and the tightness and heat, fucking hell.

Natsu gave Gray's cock one last swipe of his tongue, then began kissing a trail up Gray's chest. Increasing the pace of his fingers inside Gray, Natsu bent down and kissed him, hard. Gray was a panting, moaning, incoherent mess, but he reached down and wrapped a hand around Natsu's cock and his own, stroking them both in time with the pace Natsu set inside of him.

Natsu could feel Gray grinding down on his fingers and begging more and faster and please, so he slowly added a third, stretching into the tight heat. The strangled sound that escaped from Gray's throat urged him on, and Natsu began to work his fingers in and out more forcefully, until he was pushing Gray into the mattress with the intensity of his thrusts. Their kiss became desperate, full of panting and moaning and cursing and clashing teeth.

"G-g-gray, I'm gon-" Natsu couldn't even finish his sentence before he came, head thrown back and teeth bared, vision blurring as he rocked through the sensation. Gray wasn't far behind him, and Natsu could feel Gray clenching down on his fingers as he cried out, body trembling and jerking as Natsu's fingers slowed, and eventually slid out of him. After a second, Natsu collapsed on all fours, hovering over Gray's shaking body.

"Okay?" Natsu whispered, pressing his lips to Gray's forehead. Gray laughed breathily, leaning up and capturing Natsu's lips in a soft kiss.

"Fucking amazing," he replied, collapsing back onto the bed. Natsu grinned and pushed himself up, holding onto the bed for balance. He squeezed Gray's thigh, then made his way to the bathroom and washed his hands, still breathing heavily. Looking up at his reflection, he grinned. Messy hair, flushed face, marks on his neck and chest – not far off from how he looked after they fought.

He grabbed some towels and brought them back to bed, cleaning up himself and Gray, who didn't respond other than to grunt softly. Natsu laughed, throwing the towels onto the floor and climbing into the bed. He wormed his way under the blankets, then pulled Gray towards his chest, wrapping an arm around Gray's stomach.

"Mmf." Gray reached down and entwined his fingers with Natsu's.

"So eloquent." Natsu pressed soft kisses to the back of Gray's neck and he sighed, squirming until his back was flush against Natsu's stomach.

"Sh'up," Gray mumbled. "Maybe next time I'll finger you and see how articulate you are afterwards." Natsu swallowed thickly at the idea of Gray's fingers inside of him.

"Maybe next time you can put more than just your fingers inside me," he whispered, grinning at the bitten-off moan that passed Gray's lips. Gray ground back against him, but yawned at the same time. "Go to sleep, princess," Natsu murmured softly, nuzzling Gray's hair. Gray hummed contentedly.

"Love you," he murmured sleepily. Natsu smiled fondly until Gray added, "fiery mouth breather." Natsu snorted, hugging Gray tighter against him.

"Love you too, ya pervy popsicle."