* ~ The Eighth Year Universe Series ~ *

PART FIVE

Blame it on Hate

For Science

! - EXPLICIT CONTENT - !

Harry x Daphne x Neville x Lilly - !

*** WARNINGS ***
Anal sex, double penetration (it's Harry x Daphne, then Harry x Daphne x Neville - no gay stuff between Harry and Neville, I promise)

NOT CENTRAL TO THE MAIN STORYLINE. So please don't read if you aren't into the foursome aspect of the relationship/smut/explicit sex scenes, etc. Just skip and carry on regardless!

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Christmas Eve was always a family occasion for the Potters and Longbottoms. They spent it together every year, and this year was no different. If anything, they needed it more. Usually, everyone bar Harry drank a bit too much on Christmas Eve, which led to Lilly and Daphne getting over-amorous (Daphne having babies in August had meant she never tended to be heavily pregnant at Christmas time).

However, this year, Lilly was relatively heavily pregnant, and she wasn't having a great time. So sex wasn't really on her mind, but unfortunately, it was on everyone else's.

It had all started with an innocent conversation. They had been sitting around in the drawing-room drinking – well, Daphne and Neville were anyway. Neville had been coerced into having a few firewhiskeys because it was Christmas. He often stayed sober for Harry, but it had been Harry who convinced him he needed to relax on this occasion.

As he had pointed out to Neville, he had Lilly to keep him company in sobriety anyway. Daphne's one glass of wine and Neville's nightcap had turned into a few drinks, and as everyone got tipsy, their lips got looser.

Somehow, through something Lilly had said to Daphne, the topic of sex had come up.

"I've kind of lost my sex drive since getting pregnant, to be honest," Lilly confessed.

Daphne looked at her in disbelief, "Really?"

Harry bit back an amused smile and glanced down.

"Why do you sound so horrified by that?" Lilly asked her best friend, "I mean, we have had sex, obviously. We had to make sure we could after Neville's accident, but I just wasn't really into it, you know?"

Daphne scoffed, "I was so into it when I was pregnant. We had so much sex then, didn't we?"

Harry looked over at her in amusement, "We did, yeah."

"That's hardly anything new," Lilly scoffed, "You two are always at it. It's a good thing you're not that fertile, or you'd be Weasley's by now."

"Hey, that is offensive!" Daphne said, pointing a wine glass in her direction.

"You do have a lot of sex, though," Neville cut in.

Daphne looked over at Neville, "Out of interest, how do you feel about the lack of sex, Neville?"

Neville looked a little uncomfortable at being asked the question so forwardly, "It's fine. If Lilly isn't in the mood, then she isn't in the mood. I'm not going to get petty about it."

Daphne crossed her arms over her chest and stared him down, "Let's try that again, with the truth."

Harry snorted, "She can see right through you, Nev. Haven't you worked that one out yet?"

Neville sighed and looked over at Lilly warily. His wife narrowed her eyes at him and crossed her arms over her chest, "Go on then, Neville. What is the truth?"

Neville looked down awkwardly, "I feel a bit like it's my fault. That you're…not enjoying it because something is wrong with me, after my back and…you know…" he trailed off.

Lilly looked somewhat affronted that he could think such a thing, and Daphne rolled her eyes, "Oh for Merlin's sake. Come on, let's go to bed. Poor Neville needs assuring that nothing is wrong with him," she shot Lilly an irritated look.

And Harry waited for the inevitable argument.

Lilly raised an eyebrow, "So I'm invited, am I?"

"Don't be so petty," Daphne said offhandedly, "You're always invited. I normally just let Neville tag along because you're married to him, but this time, I think it's about time we ease his worries. Don't you?"

Lilly looked from Neville, who still seemed uncomfortable, back to Daphne, "You did say you would help us out in that department. When Neville got the news about how sex might not be the same after his injury."

"I did," Daphne agreed, "And as I am such a good friend, I always follow through on my promises."

She walked to the door and looked at Neville, "Come on."

Harry snorted and got to his own feet.

"I'm not a dog," Neville muttered as he pushed himself up.

"She gets authoritative when she's horny," Lilly whispered as she joined the two men.

Daphne was too far ahead to hear them, but she probably would have just agreed with Lilly if she had anyway. She stepped into the bedroom first and had an elf quietly move Thea into the nursery for the night.

Harry dutifully put up silencing and locking charms, then threw himself onto the bed, "How are we doing this then?" he asked calmly.

"Well, I'm not doing anything," Lilly said as she lay down next to him, "I'm just observing for scientific purposes."

Harry snorted in amusement and looked sideways at her, "I'll observe with you then," he said, a little suggestively.

Daphne pushed Neville onto the bed gently and ordered, "Put a pillow behind your lower back for support and sit up straight."

Lilly raised an eyebrow, "You want a Healer's robe to go with those orders?"

Daphne shot Lilly a smirk, "So he's into roleplay, is he?"

"Lilly," Neville groaned, his cheeks flushing with embarrassment.

Daphne pulled her jumper off and slipped out of her jeans, leaving her in skimpy green underwear. Then she grabbed a silken robe from the back of the door and transfigured it into a robe the same colour and style as those the Healers in St Mungo's wore.

Harry grinned at Lilly, who chuckled, "She always takes it too far, doesn't she?"

"She's a drama queen, of course, she does," Harry returned.

Daphne ignored them and stripped Neville with magic, then moved up the bed to straddle him, "We know mental stimulation alone doesn't work anymore. It needs to be physical too, so let's see if this works…."

She kissed Neville, who was used to these four ways enough by now to know that Lilly wouldn't mind if he kissed her back. So Neville deepened the kiss, and his breath hitched when Daphne rubbed herself against him, circling her hips, so the silken material of her pants rubbed against his cock.

She slid her tongue into his mouth, distracting him from his worry while she did so, and Neville groaned as his cock began to harden underneath her.

Daphne broke the kiss to smirk at Lilly, "See? Wasn't that difficult, was it?"

Lilly raised an eyebrow, "Are you teaching me how to turn my husband on?"

Daphne quirked an eyebrow up back at her, "Clearly you need the lesson, so watch and learn."

Daphne moved down and took Neville's cock in her mouth. He was thicker than Harry, but Harry was bigger.

Lilly shook her head in disbelief and muttered, "She's annoyingly cocky," as she stripped Harry with magic.

Harry, who had expected to be a backseat driver tonight, looked at Lilly in surprise.

"Uh….you said…?"

"Screw what I said. If she thinks I'm going to sit here and let her parade my husband in front of me, she has another thing coming," Lilly said as she wriggled down the bed to take Harry's cock in her mouth.

Harry knew that Daphne had said what she had on purpose, to goad Lilly into action, when she looked up and caught his eye, smirking with her eyes as she sucked Neville's cock.

Having not had much sex since the accident, Neville murmured to Daphne, "I'm not going to last long."

So she moved up the bed once more and grabbed his cock, guiding it into her pussy, which was already wet from the foreplay. Neville groaned and automatically moved to thrust against her, but Daphne shook a finger at him.

"Uh-uh – serious back injury. You stay still like a good boy and do as you are told," She ordered.

The order made Neville groan, and Daphne smirked over at Harry, "Oh, he definitely has a thing for Healers."

"Him and me both," Harry joked, arching his hips to shove his cock deeper into Lilly's mouth.

Lilly gasped and pulled off him to catch her breath, sending him a glare in return. Harry just smirked back; Daphne had definitely been a bad influence on him over the years.

When Neville got close, Daphne ordered him to lie on his back with another strategically placed supportive pillow. This time it was to stop him from moving his hips and hurting himself, allegedly. She definitely had the authoritative tone of a Healer down anyway.

Daphne then straddled Neville and slipped his cock into her once more. She leant down, her tits brushing against his chest as she fucked him, and Harry, seeing an opportunity, couldn't help himself.

He gently pulled Lilly up to him and muttered, "Kiss Daphne to keep her distracted."

"Why?" Lilly whispered, "What are you going to do?"

"Something she'll enjoy, I promise," Harry said, giving Lilly a mischievous look.

Lilly trusted him, and she knew that Harry would never do anything that made Daphne uncomfortable. Those two had a pretty good grasp on what they could and couldn't get away with on a sexual level.

So she moved up the bed and lifted Daphne's head a little so that she could kiss her. Daphne returned the kiss eagerly, slipping her tongue into Lilly's mouth and moaning when she felt Harry do a lubrication spell on her arse. As Lilly deepened the kiss, Harry slid a finger into Daphne, who gasped against Lilly's lips. Neville's cock pulsed uncontrollably inside her as he realised what Harry was up to.

Harry muttered another charm, a lazy one because he was really turned on and he needed a release. It was a form of muscle relaxing charm, normally used by Healers, ironically enough. But it allowed him to trade his one finger for two fingers and then, as Daphne started to move back against him, the head of his cock.

He caught Lilly's eyes over Daphne's shoulder and gave her a nod. So Lilly kissed Daphne hard, distracting her for long enough for Harry to push into her tight arse. Daphne broke the kiss, crying out in what Neville probably thought was pain, but Harry knew otherwise. He knew every single one of Daphne's sounds, and that was definitely a cry of pleasure.

Daphne pressed back against him, and Neville thrust up into her a little, making Daphne gasp, "Fuck – Neville, you shouldn't have done that."

"I don't care," Neville replied, thrusting up again as Harry slid his cock halfway out then pressed back into her.

Daphne cried out in pleasure, louder than she usually did and gasped, "Harder, Harry."

Harry's cock twitched eagerly at the order. He grabbed her hips and began to thrust into her arse, slowly at first but then finishing at a punishing pace.

Neville didn't last long, he had been close before, and now he could feel Harry's cock throbbing against his through the wall of Daphne's pussy, which heightened every sensation coursing through him.

He arched his back, which he shouldn't have done, and groaned, "Fuck, Daphne, oh, fuck!" as he came, thrusting up one last time as his cum spilled out into her.

Neville tipped Harry over the edge. When he came, his cock throbbed, and Harry felt the explosion. The fact Neville had just cum inside Daphne tipped Harry over the edge. He got jealous if a stranger looked at Daphne funnily, but it just turned him on with Neville or Lilly.

He thrust into Daphne hard, gripping her hips tight enough to leave bruises as he gasped.

"Oh fucking hell, Daph, fuck, yes!"

Lilly reached down and thumbed Daphne's clit, making her best friend, who was already close, fall over the edge with a cry of, "Oh Merlin, yes, yes, yes!"

The three of them were well and truly done when they collapsed on the bed, all in desperate need of a shower. But all sated, apart from Lilly, who really hadn't been lying when she said she wasn't feeling it at the moment.

"You two have done that before, haven't you?" Lilly asked knowingly.

Harry shot Lilly a grin, "You know what we're like in the bedroom, of course, we have."

Daphne sent Lilly a knowing look, "I could tell you were intrigued, and whether you're 'feeling it' or not, you were definitely turned on. We'll have to teach you sometime when you're not pregnant."

"I didn't….that wasn't what I…." Lilly trailed off, her cheeks flushing red.

Harry chuckled at Lilly's discomfort and grinned over at Neville, "Experiment results – Neville's dick is definitely not broken."

"Lilly's just a prude when she's pregnant," Daphne agreed, giving her best friend a fond look.

Lilly huffed, "Fuck you," she muttered under her breath.

Daphne laughed and leant over to brush her lips against her best friends, "But that's fair enough since you're cooking two adorable little babies in there."

"And since Daphne definitely doesn't mind picking up the slack," Harry muttered.

Daphne raised an eyebrow, "If you're calling me a whore, I'm taking your Christmas present back."

Lilly snorted in amusement.

"I wasn't calling you a whore," Harry said sharply, "I just meant that you like sex, and you're more than capable of pleasing Neville and me at the same time."

Neville sniggered into his pillow, "Harry, stop digging that hole," he said to the laughter of his wife.

Daphne and Harry's 'argument' descended into bickering, and from there on out, normalcy resumed.

- TBC -