Big is very loving and gentle when he and Eggman fuck. Eggman undresses and almost looks a little shy and nervous in a way Big has never seen from the big loud confident man. So he holds him gently, cuddles him and rubs his back, shoulders, and tummy to relax his muscles and relieve him of tension, nuzzles into him and grooms him by licking him, quite like he's another big cat like him. They do both have whiskers and he does have "fur" on his body too- not anywhere near as much as him but quite fluffy and thick!
It's a surprisingly sweet and tender experience, rare for Eggman's encounters. He feels so loved to be handled with such care by another big strong man. He giggles and blushes and is almost a little lovestruck which is also a very rare feeling for him. He's weak in the knees and falls against and sinks into Big's massive belly that feels so invitingly soft. He has to give him vocal permission to grope and fondle him because he won't do it without him asking when it gets this serious. He says "You can touch them now, you know."
Big enjoys grabbing Eggman's tits and squishing them together and he finds his fascination with them amusing but it feels really good, so he sighs in delight too. He moans when Big gropes his ass in nice large handfuls with his big hands, and his cock twitches very eagerly when he takes hold of it and begins to stroke it, soon he's very hard and precum is trickling out. He's so excited and it's clear that he really wants this. He lets Big push him down onto the bed and climb over him and he's pinned by the weight of his big belly, so cozy and squishy.
He gets a bit nervous again and gulps when he feels Big's huge tip pressed to his hole but he's a sweetheart, he makes sure he's comfortable and calm and lets him know he's safe and he'll be careful with him. He stretches his hole with his thumb and then starts to push the tip inside very slowly. With the tons of lube, they're set to achieve the almost impossible of getting it inside him despite how huge he is. Eggman is already biting his lip at how much his hole is stretched just to push the tip inside and his hole grips it tightly already.
Eggman told Big to get as much of it inside him as he could, so Big keeps going. Before there's even half of his length inside him, Eggman feels so stuffed full. He's alarmed when he realizes there's still more as Big just continues pushing even more. He's already squeezing his eyes shut, gritting his teeth, and clawing at the sheets just from allowing his hole to be forced as wide as it can stretch and fit as much as it can. The pressure on his prostate is a lot already once he gets it all in. Then he truly realizes what he's getting onto.
Tears prick at his eyes as his hole is stretched so wide. He tried to practice and prepare the best he could but nothing could've truly prepared him for his size, it's definitely the biggest he's taken in length and girth combined. He's whining and whimpering at first as Big moves in and out, he accidentally lets it slip "It's too big... Ohh it's too much!" Big is considerate and asks if he should stop but Eggman is determined and says he should keep going. Because the truth is, the struggle just arouses him even more.
So Big comforts him by wrapping his arms around and holding him closer as he continues with slow gentle thrusts. It's so long and thick, Eggman can feel every inch throbbing hotly inside him and he's so full he can feel it in his stomach. He gasps every time it hits his prostate. He feels so nice and tight around Big's cock, he likes feeling Eggman's huge fat butt cheeks squishing against him every time he pushes in. They really enjoy cuddling and fucking, Eggman sighs and giggles from the pleasure and Big is glad he can make him happy.
Eggman tells him to go just a little faster when he feels ready and Big obliges. Even though he's still not going that fast, it sure feels like a lot with just how huge he is, it's so much for Eggman to take, especially with the increase of speed and impact of his thrusts. He moans louder and gasps every time it hits, a big smile on his face from the total bliss. His head is spinning and there's butterflies in his stomach, the pleasure is so intense. Big pumps him full of a huge load of cum and he loves being filled up so much, it soon makes him cum too.
The next morning he's like "I can't believe I just let that silly big purple cat fuck me..." And not just that but it felt great and he made him feel all warm and fuzzy in a way he usually never feels! He isn't sure how to handle these feelings so he doesn't lol, he just decides he's not going to dwell on it. Big is a lot more chill about it than Eggman and his calm presence puts him at ease. He lets himself enjoy the cuddle that Big gives him and tells himself he's just going to pretend it didn't happen after this. He asks Big not to tell anyone and he respects that.
But he liked it so much that it doesn't take long until he realizes that's not going to happen, he can't have it be just a one time thing when it felt that good, he can't deny himself such pleasure. They meet up again and agree that they don't have to do anything together but while they're spooning, he soon gets horny again thinking about their fun cuddly sex the last time and he needs to feel it again. This time, he stays lay there in their cuddle position on his side and lets Big slide it in just like that. He groans as he's plugged up by his cock so deep this way.
Every deep stroke is the feeling of pure ecstacy and makes him sigh in total bliss. He enjoys pushing back into him some more to make him sink his cock in even deeper. He cums so hard he shoots ropes far across the sheets and it feels good when Big explodes inside him. He snuggles up to him after and he nuzzles into his soft fluffy fur of his chest. He's still a little embarrassed about what he's feeling with a blush in his cheeks that he hides by burning his face into his fur but he knows he couldn't deny himself of what he wanted to badly.
He realizes he could get used to having this big kitty as his cute boytoy. Big tells him that he likes being his friend and playing together like this, so he's clearly open to the idea of it continuing too. And so they do meet up a few more times after. Sometimes after a bad or long hard day, Eggman wants to meet up with him again for a cuddle to help him feel better but he always ends up letting him inside him again. He feels so much relief from all the stress when he can just switch his mind off for a while and enjoy the feeling a huge thick cock pumping inside him.
He's been enjoying the softer gentler sex with Big, it's a nice change from how he often likes it rough. But after getting better at to taking his cock over time, he's eventually ready for it to fuck him harder like he always loves too. He's been tempted but it took a while to gather the courage take on the challenge. But he knows how badly he's been wanting it all along, he has to give it a try. Big notices that his demeanor is different as he almost seems a little shy again but is still very forward with it, as he's sat on the bed presenting his ass to him.
He tells Big he wants him to go harder and faster this time and to not be afraid to be a little rough with him. Big is quite surprised by this request because he always expected that slow and gentle was a must and likes it that way, he doesn't want to hurt his friend. But Eggman tries to show total confidence despite his heavy blush. He wiggles his butt to tempt him and pleads him to just give it a try, saying they'll both really enjoy it. It will be fun just like play fighting, he doesn't have to be mean and hurt him and they can still be careful.
Big approaches the bed and puts his hands on his butt, gives it a squeeze, and spreads his cheeks apart. Eggman is almost trembling with excitement but tries not to show it because he doesn't want it to be mistaken for fear, though he is nervous too. They lube up a ton and Big rubs his cock between his ass cheeks to get him warmed up. Eggman says he can't wait for it to pound him so hard and fast and pleads him. He always moans immediately upon insertion because it's so huge, he's so addicted that feeling now. But it's about to get even better!
Big goes the fastest he's ever gone. Pounding into him, slamming into his prostate over and over. Eggman moans and writhes and his mind goes blank, all he can do is moan and giggle in delight. He's so stretched out by his immense girth and so stuffed full so deep with a bulge in his stomach. His cock has never been so stiff and dribbled so much precum while being fucked in the ass before. Big knows he likes it because it happens when he makes him feel very good and happy so it makes him feel okay to continue drilling into him.
Big likes the feeling of the man's huge plump ass plapping against him so he grabs Eggman's legs to pull him even closer and to pound it harder and deeper and loves how much louder it gets. He moans and whimpers as he slams into him and hits the spot so good. Big asks him if he's okay and he doesn't just assure him but also begs him not to stop like "Yes yes, please don't stop!" because it feels so amazing. Having a huge heavy strong man on top of him, forcing a huge thick cock as deep as it can go inside him is the truest form of bliss for him.
His tongue hangs out his mouth as he pants and he backs it up to him. He feels like a whore in heat when completely and utterly dominated by him. Before it just felt like two friends playing around but now he's given all the power to him, let him own his ass and use him as he pleases. "Oh I love taking your huge cock, I'm all yours! Please fill me up with your cum!" He cries. Thinking about how it should be humiliating and guilty he should feel to allow himself to be so vulnerable just turns him on with how scandalous and naughty it is.
The passionate loving thrusts of Big's huge thick cock pumping in and out, so deep and hard makes it so worth it. "I dare you to go even faster when you feel you're about to cum!" He blurts out, not even thinking about whether he's going to be able to handle that but he still keeps bouncing his ass on his cock harder to help finally push him to the edge, he's tempting it, he's pleading for it by trying to make it happen faster so eagerly, he can't resist, he wants it so bad. There's only so much more both of them can take until one of them blows.
Big does as he was told and when he feels it, he jerks his hips hard and fast as he can, despite his heavy breaths from the powerful exertion, putting his whole last burst of energy into it. Slamming into his prostate so hard that Eggman feels immense mind breaking pleasure all throughout his body and screams out his name in total ecstasy, the pleasure is so intense that it stuns him. When Big finally cums deep inside him, pumping him full of burst after burst of cum, Eggman groans deeply and cums so hard to his ass being overstretched and overfilled.
This is how Orbot and Cubot finally find out about them being a thing for sure, they've overheard him getting up to all kinds of dirty stuff in their time and they did slightly suspect that something was up between them with the frequent odd visits from Big but the last name they ever expected to hear him call out in the bedroom was his! Eggman was just so caught up in the heat of the passion that he didn't think about whether they could hear him and how they know just exactly what he's been letting this giant purple cat do to him all this time.
He also just seems to have forgotten about the possibility of them being around altogether because they clearly weren't exactly trying to be secretive about it when Big is leaving his bedroom and Eggman in nothing but a fresh pair of briefs giggles and grabs and kisses him sloppily in the hallway to say goodbye. But then when Big moves his big body out of the way and he sees Orbot and Cubot glaring, his eyes widen, face turns bright red, and he slams the bedroom door shut to bury himself in the pillows in embarrassment lol
