The AI and the Spartan

Summary: Chief and Cortana being intimate has interesting consequences.

Ch 1

It was early in the morning, and the gym of Infinity was empty, save one. The Spartan-2 known as Master Chief. He was busy going thru various exercises, and was now punching and kicking a training bag.

"Good form, chief." Cortana said, appearing out of nowhere.

"Thanks, Cortana." Chief said.

"How about a spar?" She asked, taking a stance.

Chief raised an eyebrow, and looked at his AI friend.

She's really back.

John was devastated after her 'death', when she saved him from the Didact. After that, he and blue team served alongside the S-4s on Requiem. When he realized that the Prometheans they were all fighting were composed humans from New Phoenix, the idea came to his head that Cortana may also have ended up on Requiem.

It was a fools hope, but John was willing to take it, if for the sake of his sanity. He tore across Requiem, leaving death and destruction across his wake. He found her deep inside a facility, inside what the Forerunners called 'the Domain.'

His luck held, as he arrived when she was reborn, in a sense. She was cured of rampancy, and resided in a hard-light body. She felt more human, and was eager to test new things.

"You're on." Chief said, entering a different stance.

Cortana struck first, throwing a fist. John easily intercepted the fist, holding it in his vice-like grip. He grabbed her shoulder and threw her onto the ground, using the momentum to follow her. Cortana then wrapped her legs around his neck and threw him off her. The two stood up again.

"Good. Use your agility against a stronger opponent. Let them wear themselves out." Chief said.

"Unless your opponent is a Spartan. Than you're screwed." Cortana said.

"There's that." Chief smirked.

The two continued their hand to hand sparring, and several S-4s were watching to their amusement.

"Who would have thought. The Spartan and his AI." Palmer said.

"Okay, Cortana. You win." John said.

The Spartans looked and saw Cortana straddling the Chief. John attempted to sit up, only for Cortana to push him back to the ground with his head banging against the hard floor. Cortana grinned as she trailed a fingers down his torso.

She wondered just how many scars he had from the war, from all the fighting he'd done. Chief raised a hand and put it on her cheek.

"What are you thinking about, chief?" Cortana asked.

"He's thinking about boning you!" one of the S-4s rudely said, followed by whistles.

"Chief and Cortana, sitting in a tree! F-U-C-K-I-N-G!" another said.

The two stood up, glaring at the newer Spartans.

Spartans. Hilarious. They make rude comments and jokes. Hell, the Chief could take on the entire S-4 corps and win.

"Laugh all you want. At least he's getting laid, unlike you saps." Cortana bitingly said, walking away with the Chief. The stunned looks of the S-4s gave Cortana great satisfaction.

"Was that necessary, Cortana?" Chief asked, walking down the hallway with his friend.

"Yes." She said.

"I will say this. Cortana has quite the tongue. Unlike her boyfriend." Palmer said to Lasky.

"What are you talking about?" the captain asked, looking up status reports.

"She pretty much burned one of the Spartans, because he made remarks on how Chief and Cortana are fucking." Palmer said.

Lasky spit out his coffee, with an incredulous look on his face.

"Say what? Palmer, the S-2s had their sex drive reduced thanks to the augmentations. But I wouldn't put it past the two to experiment. Oh god." Lasky said.

"What?" Palmer asked.

"A supersoldier and his AI friend. Now that'll keep the news busy." Lasky said.

"By the way, why did you say boyfriend?" Lasky asked.

John wrapped the towel around him, finishing his shower. He went over the differences of the 2s and 4s. He knew most of the 4s came from the marines and ODSTs, hence their behavior. He couldn't help but chuckle at he remembered Cortana's rebuttal.

Putting a spare set of clothes on, he exited the bathroom, and looked at the empty room.

Cortana was here a minute ago.

Chief hugged the walls and headed to the bed. Kneeling, he pulled out a case and opened it, revealing a shotgun and some shells. Loading the weapon, he stood up when the hair on the back of his head stood up.

Chief turned around, and saw Cortana standing on front of him.

"Nice to see you, chief." Cortana said, pushing him back on the bed, and tossed the weapon aside.

Cortana sat on John, gazing down at him. Chief pulled Cortana towards him, and kissed her. Cortana's eyes went wide eyed, the sensation new to her. The pulled back from each other, looking at each other.

"So that's what kissing is like." Cortana said, earning an odd look from John.

"You've clearly did your research." John said, putting a hand on her hip.

"I did." Cortana said, lightly blushing.

"Care to share what more research you've done?" John asked.

Cortana gave John a sultry look.

"How about I show you my research." She said, in a salacious tone.

John grinned and saw Cortana lean into him. As the two kissed, she unbuckled his pants and was surprised at him.

"Those augmentations sure are something." Cortana said.

Chief felt himself enter what he assumed to be Cortana's vagina, as she manipulated the hard-light to accommodate him. Chief felt just about everything during his long years as a Spartan, physical to psychological. But this was something new.

Chief took deep breaths and felt Cortana rock her hips back and forth, slowly at first.

"Cortana…" John said, when she kissed him.

"Oh, John." Cortana replied, deep pleasure in her voice. She felt his cock pulse, about to climax. Cortana rode John, the sensation overwhelming her. She had some idea of why it was feeling good, and wanted it to continue.

"Cortana!" John said, as he climaxed. The two held each other tightly, breathing between the two was heard.

"I'm so happy I can do this. Be this close to you." Cortana said.

"Always, Cortana." Chief said, kissing Cortana.

"Oh boy." Roland said, as he went thru the ship's security footage.

"What is it, Roland?" Palmer asked, a cup of coffee in her hand.

"This." Roland said, showing the Spartan the footage of John and Cortana. Palmer just stood there, watching the two being intimate.

"I knew the chief cared for Cortana. There's a reason he's called 'the terror of Requiem.' But damn." She said.

"Should we tell the captain?" Roland asked.

"Tell me later. Doctor Halsey will be boarding the ship in a couple of days. She wants to talk to Chief and Cortana." Lasky calmly said.

Roland and Palmer facepalmed, wondering how this would turn out.