Balros & Echoen
Squirrel adoringly squeezes you, real firm, buries you deep in silky floof and rich musk. I've learned a lot from you, with you. Appreciate you as a friend and fuckpartner.
And you're so freaking -cute- too

LlunaBlue
Falls deep into that floof, OH, that wondrously soft, musky, relaxing, corrupting floof... always so plentiful as to seemingly defy reality itself.
This Lluna has known you for a good while; she has recollection of SO many of the things you've done to her already. By this point she doesn't even care that her consciousness and memories get transported into another version of herself from a neighbouring universe, shoving its previous occupant to the deepest recesses... it never takes long for them to begin enjoying the ride anyway.
The instant you speak the word "cute" is the instant Applebloom eyes begin forming once again:- forcing the original sockets larger, pushing her original pupils down and her original skull up, this time accompanied with the elated and rather lewd giggles of a Lluna with some idea of what's about to happen.

Balros & Echoen
There's always a Lluna that knows him, that remembers him, remembers herself, and everything she's ever become. Well, to an extent - remember something too intensely and it's an outbreak all over again. It always does well to have a Lluna on hand nearby who can feel the pressure, feel the urge, feel the squeeze of adjacent corrupted realities press in and beg her to spill out into this one. For a while, he's happy to just snuggly with the sweetest, prettiest, most adorable blue foxgirl...
But then, he feels it. How your eye sockets and skull begin topush* against him, so when he looks down at you, he first meets the gaze of the cartoonishly big-eyed ponygirl he's smitten with. He can feel your hips jerk and buck as just the sensation of having your eyes shoved down, personality suppressed, your own brain flattened and squished beneath the hormone-fattened young pony brain growing on top of it, makes you cum. The corruptions always make you cum, or edge super bad at least. Your eye sockets divide into two pairs, the lower smaller pair of dull-dimmed vixgirl, the upper larger pair of bright-manic ponygirl.*

LlunaBlue
Her lewd, appreciative gasps and moans get interrupted as her voicebox heaves and blurts out a second one, a new lump sticking out of her neck, and her skull throb-throb-THROBS upwards... and then that OTHER adorable voice that you love so much speaks to you.
"Aaah...! Me-me-me-meeee! Mo-mo, la-de-dah-laaaaaaaah! Oooh FUCK, this one seemed to have some plans for you, hun! Shit, her sex drive was almost... aggressive... OH WELL, MINE AGAIN! I hope you don't mind, little slutfox, if I just... nnngf..."
Her tongue hangs out as the fox body begins shaking involuntarily, twisting and thrusting her butt upwards at various angles
"Nnng... hnnngf... fuckin' COME ON!"
The beginnings of hooves start forming above her armpits and in front of her legs, and a yellow tinge appears above each buttcheek that swell and creak audibly with each push upwards. her grip tightens around you as she looks up again
"Jesus shittin' CHRIST, she's a strong-willed one! Do me a favour and gimme a boost, darlin'!" 

Balros & Echoen
His ears twitch as your voicebox -twangs- with two voices, subsequently encouraging his boybulge to swell -damn- taught, as that was damn hot. He grinds his crotch against yours as your mutating growth turns him on so fucking much. He squeezes you closer to him even as you bulge outwards with corruptive Applebloom forced growth. He can feel all the little microtwitches and nanotremors that come from your foxbrain listening to the words your ponyvoice is saying, each syllable seeming to force each inch of change out of you. The squirrelboy can feel your limbs clutch and squeeze at him, digging into his pelt. "Lluna..." He murmurs, his voice sinking into your dual pair of ears, blue and yellow-blue.
Sliding one large handpaw down your back, he cups over your rump, squishing his palm down into the swelling fat of your ass. "I need to fuck Applebloom's ass, ok? Give me her butt to breed. You know how she gets, how she needs this. She's completely addicted. She's not going to stop until you give her to me. LlunaBloom..." 
As those yellow ponygirl legs erupt forth from your doubled hips, they catch his shorts and yank them down to his ankles. Briefly, his pink pillar of throbbing fuckflesh is buried against blue-furred foxgirl belly and swollen yellow crotchboobs, both vixen and pony pussies drooling and pumping girlcum over its base and his sheath. Those new yellow forelegs catch his shoulders and pull you up, Applebloom forcibly moving your body to position above his dick, and ram, CRAM her clenching bubble-fat butt right down onto it. All the fucking way, till the ring meets his lap. Wrapping so much hot, clenching fucktunnel around his girth, he clenches his toes and fingers as a brief, hot blast of cum belts up into your guts; he wants to enjoy this but the immediate pleasure is incredible. Worse, he can feel your tailstar plumping -bigger- around him, more yellow pony flesh forced into your ass and hips.