Spike sighed as he wiped some blood from his claws.

"Another lovely kill darling!" Rarity commended.

"Thanks my dear wife." Spike replied.

"So...do you know what day it is?"

"Yep, it's the anniversary of our marriage and as it turns out, I got a gift for you." Spike told her. "Here, a framed family portrait made of black diamonds, a bracelet of Shadow emeralds, and your favorite drink mixed with my cum."

"Spike-aid, yum." She guzzled the drink before tackling him. "I love all of these wonderful gifts."

"You're welcome, so what you get me?"

"Oh, I was thinking we'd get a mistress."

"Whoa, really?"

"Of course."

"Wow..."

"Someone to pleasure you while I'm unavailable & someone to watch the kids while we're away...but especially for your own pleasure."

"You're so sweet."

"I'd give so much for you Spike, and I think I know who's going to be our mistress."

"Who?"

Rarity whistled.

"Hey."

"Rainbow Dash?"

"I thought the best guard around would be perfect."

Then Rainbow Dash, brushed herself against Spike's body. "What do you say big boy?"

"I'm not complaining."

"Wonderful,now kiss in front of me."

Spike gulped hearing that before Rainbow Dash stood up on her hind legs with her front ones on his chest. Rainbow Dash then closed her eyes as she puckered her lips expectantly.

Spike picked her up and pressed their lips together in a hungry kiss. Their tongues battled as Spike & Rainbow Dash breathed heavily.

"Now it's official." spoke Rarity.

They then broke away.

"Y..."

"Eeeyup!" Big Mac interrupted.

"What are you doing here?"

"Have you forgotten? I am the castle's local vampire!" Then Big Mac turned into a bat and flew off.

"Random."

"Anyways, thanks for the great gift Rarity."

"You're very welcome my horny beast."

"So, feel like doing some sensual flexibility training?"

"See you later Rarity!"

Then Spike picked up Rainbow Dash and off they were to Spike's room.

They made it to the main training room. Spike & Rainbow Dash then got on each other and Spike helped her stretch her legs.

She groaned and felt her leg pop.

"Yeah, that's what I'm talking about."

Then Spike helped straighten her back.

"Easy, I don't want to break in half."

"Sorry, but I want to have a lot of fun with my present before the threesome."

"Kinky."

"If you think that's kinky, wait till you see what I got planned for the showers."

"Can't wait."

And then, after stretching, Spike & RD were sweating.

"Race yah!"

"You're on!"

So Spike & Rainbow dash raced to the training room showers as they tore off each other's armor.

Later, a stallion walked in and say the trail of clothing, his eyes followed it and saw it lead to the showers, he blushed and left the training room as he heard their passionate moans.

Rarity herself was drinking tea.

"Hello maid."

"Ah, Nightmare Moon, just in time for tea."

"I appreciate the invite." Then Nightmare Moon sat down. "So how's your husband?"

"Wonderful, I even got him a mistress for our anniversary."

"Oh, so that's what it is, sorry I heard the moaning of him & Rainbow Dash, which made me think he was cheating."

"Oh no. This way he is kept from cheating and it's something a little kinky."

"Hmph, if I had a guy like that, he wouldn't need another."

"Why of course, you have the best body in Equestria." Rarity said to her. "Now that I have finished my tea, please excuse me for my threesome with my husband & our mistress."

"Try to keep it down this time."

"Will do."

And so, RD, Rarity & Spike got into bed and made some hot love.

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