Work Text:
Donnie had figured out long ago that his way of showing affection was particular.
Compared to his brothers, Donnie sometimes felt like the odd-man out.
Raph preferred quality time, he loved to receive quality time with each of his brothers as well as give it- sometimes in the form of convoluted “team bonding” exercises. Like the time Rapheal took the team to a drive-in theater showing Jupiter Jim XVII to “practice their stealth.”
Leo craves words of affirmation like he needs it to breathe. He’s the first out of all of them to run his mouth full of compliments when he wants to show affection. Leo responds well to praise from those closest to him.
Donnie craves words of affirmation as well, mostly from their father. But when it comes to his main shows of love, Donnie commits to acts of service or gift-giving. Fixing something that's broken is easy, especially when it shows his family how much he loves and cares about them. He created custom gifts just for them- regardless of how they misused them- he knew his affection was received.
Mikey was the cuddler. Physical affection was second-nature to the box turtle- the younger practically climbed each of his brothers just to show he was pleased with them.
Donnie was not very comfortable with physical affection from most of his family; but something was always different with Mikey. It had always felt different.
Donnie let Mikey show physical affection easily, whereas his twin and elder brother had to tread lightly. The occurrences of physical interaction between him and Mikey became more and more frequent, nearly commonplace. Something was just…. Different. With Mikey.
Donnie was particular.
When he began to realize he had very un-brotherly emotions about Michelangelo- he gained a new perspective.
Donnie not only let Mikey hug him, grab him, and rub their faces together- Donnie allowed it- he even craved it.
Upon entering their relationship, Donnie began to even seek this physicality with his mate. Now that he was clear on the feelings of his heart, he finally began to solve the puzzle of his own body.
Mikey was nothing but respectful of Donnie’s wishes. Aside from Mikey’s regular morning kisses, sleepy cuddles late at night, and his excited hugs- whenever things got too physical, Mikey would pull back, ask Donnie how he felt, and proceed accordingly. Donnie sometimes struggled with the act of telling Mikey what he wanted- it’s not as easy as it sounds!
One day Donnie can’t stand to be touched since he was stressed and overstimulated, and the next day he wants to tell Mikey to bend over his work desk and wiggle those hips just so-
Donnie cursed. The line of soldering he’s been working on getting messy with his brain preoccupied.
Why can’t he just ask for what he wants? He wants Mikey to touch him- take his pleasure from Donnie's body. He wants to claim every inch of Mikey’s skin for himself- get caught up in their love so thoroughly that Donnie forgets what day it is.
The genius groans and lays down his tools. It’s useless to continue at this point; he decides to pick up a different project while he contemplates his intimacy with Mikey.
Their relationship was still fairly new in the grand scheme- and Donnie was okay with taking what he was given… But… Sometimes the way Mikey looked- his figure in the early morning light when they’re returning from a mission. The smile he flashes when something goes his way. Mikey’s laugh, his hands, his shell, his cute plump little tail. His strength in battle was so fucking sexy. Donnie felt that urge to lay waste to Mikey’s sensibilities and fuck the orange turtle into a tailspin. Bodily fluids be damned; all the normal rules of Donnie’s sensory specifications were out the window when it came to Mikey. Mikey. Mikey.
Mikey knocks loudly on the metal lab doors; breaking Donnie out of his thoughts.
“Doooooonald! Lunch is ready! It’s your favorite! Peanut butter and jelly with potato chips inside of it- and flavorless juice!”
With a quick press of his gauntlet, the doors open and Mikey practically skips up to Donnie’s desk- careful not to bump into the table with his enthusiastic hug. Donnie wraps an arm around Mikey’s; leaning up with his goggles still on, he pecks Mikey’s cheek.
“Hehehehe! Now the other one!” Mikey turns his head.
Donnie lands a second kiss, before telling Mikey he’d be right out in a moment. Expecting Mikey to pull away and take the lead to the kitchen, Donnie didn’t expect to feel hands slide down the front of his plastron.
Stiffening, Donnie tried to look at Mikey, a question on the tip of his tongue.
Before he could indulge in the sensations, Mikey giggled and pulled away, skipping out the doorway much the same as he came in.
Donnie brushed it off. Mikey would surely come to him if he wanted something… like that.
He just had to wait.
____________________________________________________
Waiting for Mikey to initiate was pure torture.
Weeks passed, going about their usual routine; judging off their previous encounters, Donnie was certain that Mikey would have initiated intimacy by now. He feels like he’s incurred some kind of Karma for all the times he did rogue experiments on his brothers.
Donnie even tried letting his own hands wander during movie night. He tried to urge Mikey into the other room- hoping some alone time would get the point across, but Mikey took it as a sign to
climb into his lap and squirm the entire- fucking- movie!!!
Donnie was bricked up.
He ran his hands down his unmasked face, tossing and turning in bed.
He’s made love to Mikey, guided them both through amazing orgasms and soaked up the affections afterward. So why can’t he figure out the right sequence of events that lead to him dicking down Mikey into a mattress?
Mikey had started wearing more clothes around the lair. Which arguably shouldn't make him more sexy, but considering they were mostly unclothed 93% of the time, it was somehow appealing to see how the fabric clung to the box turtle’s frame.
Donnie’s favorite was the apron. Mikey’s cooking apron cinched tight with a cute little bow in the back.
Donnie wanted to tie Mikey’s hands with it while he takes his little lover on the kitchen counter.
These aggressive thoughts have been coming nearly every few hours- especially when Mikey keeps-
Teasing.
Mikey bends over to pick up a pan from the bottom cabinet- tail pointed right at Donnie.
During their sparring, Mikey is grappling with Donnie and moaning right in his ear.
Donnie caught his lover showering in his private lab bathroom- with the fucking curtain half open.
Going to bed at night to find Mikey already there- knees bent, ass up, tail wagging back and forth- told Donnie he was “stretching.”
He had been subjected to Mikey’s brief touches as they passed each other in the lair- he can still feel three fingers firmly plants on his ass, thighs, plastron, neck, shoulders- but before Donnie could return the gesture, Mikey would be gone or talking to another sibling like nothing happened.
Donnie knew his breaking point was fast approaching, but before he could come up with some kind of plan to overcome his hesitations and initiate with Mikey on purpose- he snapped.
Donnie walked into his lab. It was early morning after a long stretch of missions and patrols put them all on bedrest. He hadn’t seen anyone else on his trek to the kitchen- and when he got back:
Mikey was in his work chair- one hand gripping Donnie's purple hoodie to his face, the other rubbing concise circles over his leaking slit.
Mikey looked to be concentrating, he didn’t notice the genius entering, but why else would he be facing the door if he didn’t want to get caught?
Donnie inhaled a steadying breath. He felt his tail swell with hot arousal. Mikey knew what was coming to him. To hell with physical hesitation.
Sneaking up on Mikey was easy- grabbing his mouth so he didn’t yell was even easier. Donnie put all his strength into wrestling Mikey over to his bed- no- his bean bag in the back of the lab. He needed room to maneuver this minx of a turtle to his liking.
He dumped the youngest on the plush bedding before swiping across his gauntlet to close and lock his lab. Mikey gasped and giggled; he met Donnie’s intense gaze with a mirthful smirk and a tongue poking out like a cat who got the cream.
Donnie felt his face heat as he stared down his lover. One more swipe on his wrist and one of his lite battle shells flew off the wall and attached to his shell. Metal arms extended immediately.
Mikey blushed and shivered at the dark expression on Donnie’s face.
In the flash of an eye- Donnie had Mikey pressed into the bean bag- he was between the younger’s legs- spreading them further apart and upward with his robotic extensions. Before long, the box turtle was nearly folded in half; panting and moaning as Donnie kissed and licked at any skin he could reach.
“I w-wondered when it would get t-to much for you-! Donnie~”
“I hope this is what you want- you testudine succubus. I’ve run out of time to formulate my plans for intensifying our intimacy and overcoming my sensory barriers because YOU are occupying my every waking thought with your ceaseless- arousing- teasing-!”
Donnie cut himself off by capturing Mikey’s mouth in a passionate kiss. Donnie’s robo-arms follow his every command; keeping Mikey’s legs up and his hands trapped between their bodies as Donnie slowly grinds their lower plastrons together.
The sound of panting and churring rings out in the wide open space of the lab. Donnie is using one hand to stroke and caress Mikey’s tail- probing one finger inward to stretch the entrance.
Like this, Donnie can take in all the details of his lover's features. The delicate scales around his eyes- sparkling with wetness as the stimulation continues. Mikey’s tongue hanging for his mouth, his noises, his scent, his everything. Donnie feels addicted.
One finger slides easily into Mikey’s slit. It’s soaking wet and makes obscene noises when Donnie increases the speed of his wrist.
“Ah ah aahh! Mmmh! Don-! Donnieeee! Hah. ha ngh!”
“You’re going to take everything I give you, aren’t you? If you can dish it out, dear brother, I'm sure you can take it tenfold!”
Mikey whines and turns his neck to the side- giving Donnie room to lick and bite at the sensitive skin. This act of submission goes straight to Donnie’s core- causing him to drop down with a groan.
No more thinking- only carnal desire and following their urges to their fullest.
Donnie positions his cock to slide against Mikey’s slit- collecting the wetness and smearing precum all over.
“Wait- Dee- I’m not dropped- nngh-”
“No matter.” Donnie growls.
He pushes in- less gently than usual- the glide is enough. When he bottoms out, they both release a breath and moan in unison. Their tails curl around one another.
Mikey is tight. His cock still trapped inside his tail- swollen and ready to drop, but unable due to Donnie’s impressive member pushing in to the space it occupies. It feels sensational. The pressure in Mikey’s abdomen is enough to make the little turtle’s eyes roll back in his skull. Donnie's cock pressed into all the sensitive walls of his entrance- rubbing along his sheathed cock with each minor movement.
One moment to catch their breath. Donnie throws rational thought to the wind.
Mikey grunts when Donnie suddenly drops his entire weight on him- pushing the air from his lungs and making him squeal when Donnie bites into his neck.
Donnie begins to move. Fast. Hard. Rough. Intense.
Each thrust pulls Donnie’s cock out nearly all the way before slamming back in- hitting Mikey in a place so deep and so full- tears begin to fall and he screams with pleasure.
“My mate. My beautiful- ridiculous- illogical- gorgeous-creative- unggh. My mate- Mikey-! You’re mine. I’ll make you mine. Keep you like this- make you f-feel- so good~”
Mikey nods frantically- the pair churr and grab at each other.
“YES!!! Donnie. Donnie. D-Don-! I’m yours- always- ahhn!”
“Gonna fill you up. Hah-”
“Yeah! Yeah yeah yeahyeah- there! Fill me upp Donnie babyyy~! NNGH.”
Mikey shakes and grinds his hips up to meet Donnie’s. The feeling of warm cum shooting into the deepest part of his body brings him to a mind-blowing orgasm. Donnie is not much better above him- sweaty, shaking and groaning lowly. Pushing his hips deeper inside as he empties out into his lover.
They take a moment to catch their breath. Mikey feels cum leak from his entrance around Donnie’s softening cock. Mikey can't believe he came inside his own tail- he didn’t even drop.
Cooling off and quickly becoming lethargic, Donnie peppers Mikey’s face and shoulders with kisses while employing his robotic extensions to carefully clean them and pull a blanket out to cover their bodies.
“I love you, Dee.”
“I love you too, ‘Angelo.”
“I’m sorry I teased you so hard… I was sure you just needed a little motivation… But…”
Donnie glanced over to observe Mikey’s anxious expression before quickly reassuring his lover.
“You always seem to know what I need before I do- I was caught up in my head…”
“Classic Donnie overthink.” Mikey grinned.
Donnie huffed a small laugh.
“You know… I don’t touch very well but… It’s always been different with you. You’re my statistical outlier.”
“Is that… Good?”
“It means you’re special.”
Mikey giggled and squeezed Donnie in a hug as they settled further into the beanbag.
Donnie smiles and rubs down Mikey's shell before pausing.
“Now that I know what steps to take to get you under me- I hope you know this means I’m going to fuck you more now.” Donnie says matter-of-factly.
Mikey giggles and wiggles closer.
“Looking forward to it!”