Notes:

“Really? Tirek, of all creatures?” Twilight laughed, but it was cut off with a hiccup. “Y’know what, I’m not even surprised. You were awfully quick to betray us all for him. What, did you think he was gonna swoop you off your mismatched lil’legs?”
“Perhaps I did, or perhaps I simply have a thing for those gruff, broad-shouldered types. I believe that’s why I fell for you, dear.” Discord booped his paw against Twilight’s nose, and she batted it away, feigning indignation.
“Dumb old goat.” Twilight sighed, snuggling into her husband’s chest.
“At least this dumb old goat didn’t once consider running away to the mirror world to be with their little yellow pony paramour. Remind me again how you and Sunset Shimmer were just ‘gal pals’, Twilight.”
“Oh, we were more than just gal pals.” Twilight slurred. “We got up to way more than you and your little centaur guy-crush. Sunset and I…did stuff.”
“What sort of ‘stuff’, darling?” Discord tried and failed to mask his new interest.
“One time, we-” Twilight clasped a hoof to her mouth to muffle a burp. “One time we…sang a piano duet. And…and held hooves.”
Discord rolled his eyes. “How scandalous.”
“Oh, and we might’ve slept together once or thrice.” Twilight tapped a hoof to her chin in mock thought. “The details are a little hard to remember…”
“Save your act, my dear, I know your game already. What do you want in exchange for spilling those oh-so-hard-to-remember romantic details?”
Twilight smirked. “I want an honest account of what really happened between you and Tirek. Besides the stuff about draining ponies of magic. I wanna know what you two got up to that was so good that you were willing to give him all of Equestria. But mostly, though, I wanna know if you topped or bottomed.”
Discord flushed a rare shade of pink pink. “P-pervert.”
“Only because I’ve been drinking.” Twilight protested. “I’m innocent, honest.”
“Perhaps to others, but only I know the truth.” Discord nuzzled his snout against his wife’s, earning a giggle. With a sigh of defeat, he searched his brain for memories of his exploits with the great centaur lord, and began to recant the tale, while Twilight listened with pricked ears and steadily reddening cheeks.
~
Please do not link to her Tumblr, it's NSFW