An Interesting Weekend

Spike lies in the bed Discord and him had been sleeping in for the past two nights. Today was Sunday, and the two had one more day together before Twilight and the other ponies returned. Discord walks in with a coffee mug and an especially long bathrobe on. Spike turns to Discord with a mischievous look.

"Y'know... the ponies aren't gonna be back until tomorrow." Discord raises his brow, but Spike continues. "We might as well make the most of the time weve got." Discord returns Spike's naughty look and sets down his mug on a nearby table, taking off his robe.

"Well, I wonder what we should do." Discord crawls over to Spike, who was laying on his back, until he was hovering over him. Discord's breath on Spike's abdomen makes him shudder with anticipation. Discord gives Spike a kiss on the cheek before turning his neck, suckling Spikes neck, making him moan out quietly.

"I think you've got the right idea..."

MEANWHILE

Twilight Sparkle, levitating her bags, walks excitedly out of the train. "I hope Spike is surprised by us coming back early!" The meeting had been cut early due to a problem. Applejack breaths in the Ponyville air before turning to Twilight.

Applejack's eyes open wider in thought. "Ah still can't believe Celestia ate all that cake!" Rarity nods in agreement.

"Oh, yes! I can't imagine a Princess behaving so barbarically!" Rarity shudders at the memory of Celestia shoving three slices of cake into her mouth at the same time.

Twilight giggles. "Oh, that was nothing! You should have seen her at her last birthday!" The rest of the group laughs nervously at the thought of Celestia with a Princess sized birthday cake.  Rarity shakes away the thought and turns to Twilight.

"So, Twilight, are you sure Spike will be surprised?"

The purple Alicorn nods her head. "Of course! Spike still thinks we'll be coming back tomorrow."

Rarity giggles. "Oh, yes, I'm sure he'll be delighted to have somepony to talk to after that long weekend."

Pinkie Pie jumps in the air. "Yay, surprises!"

The group reaches the library in short time and Twilight tries to open the door, to no prevail. "Well, that's strange. Spike never locks the door in the day." Twilight shakes off the skepticism. "Oh, he probably just slept in as usual."

Twilight levitates a key out of her saddlebags and unlocks the door. Using her magic, she opens the door and walks in, followed by the girls, calling out to Spike. "Spike! We've come home earl..." Twilight stops dead in her tracks, unsure at what she's looking at.

In the middle of the main room of the library, is a large bed containing Spike, and... Discord!? Spike was laying on his back and Discord was on top of him, kissing his neck. As soon as the door opened, both of them shot their heads up, blushing.

The room is silent, other than the sound of Fluttershy fainting and landing with a thud on the hard wooden floor. Rarity goes to help her up. Spike, not moving from the position, breaks the silence once more, speaking in a nervous tone

"S-so, how was your trip?"