When the Plan Backfires (Harry Potter)

A/N: Poll Winner. Oneshot

Summary: In an effort to make Hermione jealous, Ron starts to date Lavender and purposely engages in far too much PDA. However, when Lavender discovers Ron had been glancing at Hermione while kissing her, she gets suspicious. Her investigation leads her to find something she didn't expect. Hermione riding Harry as if she had done so many, many times in the past. She also didn't expect to join in on the fun.

Lavender giggled when Ron nibbled on her ear. She would have liked it even more if it wasn’t in the common room, but after she guessed that her new boyfriend had a hidden exhibitionist fetish, Lavender did what any good girlfriend would do.

Accommodate it, but within her own limits.

When she felt his hands wandering up the hem of her shirt, she wriggled out of his grasp and slapped him playfully. “Ronnie, we can’t do that here!”

Ron’s eyes darted behind Lavender before meeting her gaze, making her curious about what got his attention. It hadn’t been the first time she had seen him do that. Of course, she wasn’t stupid enough to turn her head to look for herself. That would let Ron know she was interested in what had his attention, and Lavender was too clever for that.

“Sorry, Lav,” Ron apologized, “I lost myself for a second.”

When Lavender looked at Ron with sparkling eyes, he smirked, thinking about what would come. As expected, he soon had his tongue deep inside Lavender’s mouth. Ron made all the sounds he thought would show how much he enjoyed the kiss as he peeked over Lavender’s shoulder again.

Ron wasn’t as discreet as he thought since Lavender caught him once again. This time she didn’t stop his wandering hands and shifted to the side so she could see what her boyfriend was looking at. Lavender didn’t like what, or rather, who, she saw.

She knew that they were obnoxiously affectionate in public, and she did expect most to look at them strangely, but that didn’t include friends. Parvati didn’t blink at what she did with Ron, so why would Hermione look so heated? And why was Ron always looking at her?

Lavender’s desire to kiss Ron dropped to an all-time low, with her mind filled with questions. Did Ron only kiss her in a public setting to show off in front of Hermione? Is that the reason he wasn’t near as affectionate when in private?

Lavender wouldn’t have been filled with doubt if this was a year or two ago. While she always thought that Hermione was cute, in a stressed-out librarian sort of way, the girl had blossomed into someone gorgeous this year. Gorgeous enough to where Lavender figured she might have competition if Hermione bothered to try.

Luckily, while Hermione was far more beautiful, her personality hadn’t changed one bit. If anything, Lavender noticed that she spent even more time with Harry than usual rather than trying to attract other boys. It was one of the reasons Lavender felt comfortable saying yes when Ron asked her to be his girlfriend.

Lavender pushed Ron away, again catching his eyes looking at Hermione briefly before meeting her gaze. “I just remembered I have to help Parvati with something. I’m sorry, Ron. We can do this later.”

“Oh,” Ron looked at her lips and nodded, “That’s fine, Lav.”

Lavender felt a twisting in her stomach as she walked to her room. She could tell Ron was attracted to her, but what if he was using her simply because of that? There were some strange fetishes out there, and when Hermione looked at them, she didn’t look jealous. To Lavender, it seemed like she was closer to aroused than anything else.

With how close Hermione and Ron were, Lavender could see them in this together, using her as a cheap sexual thrill until they got tired of her.

Lavender wiped away the tears that were welling up in her eyes. She was convinced that this was what was really happening. Parvati had given her far too many stories that had the same plot.

After sniffling, Lavender decided to investigate before kicking Ron where it hurt most. She was Lavender Brown, the self-proclaimed prettiest girl in Gryffindor, and no boy could play her like this.

She looked in the mirror to erase any evidence of her tears and changed her clothes to ones that showed off her tits. Hermione might have her beat with the arse department, but the brunette couldn’t hope to compete with her on breasts. If and when Lavender caught Hermione and Ron together, she wanted to show her supposed boyfriend what he had given up.

When Lavender returned to the common room, she wasn’t surprised that Hermione and Ron happened to be missing.

“Hey, did you see where Hermione went?”

“Um, she left the common room, but I don’t know where.”

Lavender thanked the third-year and walked out of the common room confidently. She had already planned what to do when she caught them, and there was no room to show any hurt or insecurity, no matter how much of that Lavender actually felt.

Of all the things she thought she knew about Ron, the only thing she was confident about was that he had an exhibitionist streak. Lavender figured he must be close by if he snuck off with Hermione. She wasn’t sure why they had picked her to play around with, but did they really think Lavender Brown would take this lying down?

She was the hub of knowledge in their year when it came to gossip and knew how to use it to her advantage when needed. Ron and Hermione would find themselves getting looks of a different sort after Lavender was done with them.

“… Merlin!”

Lavender’s ear perked up at hearing a soft, feminine moan. She had never heard Hermione make that sound before, but it was unmistakably the girl that had roomed with her for years.

She was about to draw her wand to open the door but was surprised to see that it was slightly ajar. Lavender clenched her fist and wondered if that was why Ron wasn’t satisfied with her. She would let Ron paw at her lightly in public, but if they had ever gone all the way, there was no chance she would leave the door open.

“That’s it!” Hermione squealed, “Fuck me just like that!”

Lavender tried to open the door further and was prepared to take a picture. She wanted to see how they would deal with their dirty, cheating ways all over the castle.

“Oh, Merlin! Please! Stop teasing me!”

Lavender’s jaw dropped at what she saw.

Harry was on the floor, using robes as a makeshift mat, smiling slightly at Hermione. Who happened to be straddling Harry’s cock so naturally that there was no doubt this wasn’t her first time.

With how the brunette sat on Harry, Lavender knew his cock had to be deep inside her. Lavender’s eyes zeroed in on Harry’s hands clamped down on Hermione’s hips, keeping the brunette from moving. So that’s what Hermione meant when she told him to stop teasing her.

Harry wasn’t allowing Hermione to ride him.

Lavender had forgotten why she had snuck into the room in the first place. Her original goal of exposing Ron and Hermione was thrown into the deep recesses of her mind as she watched what might be the most beautiful thing she had ever seen.

Lavender had always known that Harry was a good-looking boy, but with the school robes hiding his wiry frame underneath, she never realized how much. Her only complaint was that he was a bit too pale, but it was forgiven as she traced his body with her eyes. And if Harry was a surprise, Hermione was an astonishment. Lavender had never known the mousy bookworm could be so damn sexy.

Hermione’s breasts might not be as large as Lavender’s. Still, it was a perfect handful and looked fantastic if Harry’s desire was any indication. Her arse was as good as Lavender suspected and, if she was honest, even more incredible than imagined.

Lavender didn’t know if she could ever look at either Harry or Hermione the same way. She wouldn’t be able to get their naked bodies out of her mind.

“Yesss!” Hermione hissed when she could finally lift her hips before slamming down, her arse crashing onto Harry.

Lavender never thought of herself as a witch’s witch, but as she watched Hermione bounce on Harry’s cock, she really, really wanted to bury her face between those cheeks.

“Yes, Harry! Your cock is hitting so deep!”

Lavender unintentionally opened the door wider to get a better look, but that was a massive mistake. Harry’s green eyes locked in on her as Hermione still bounced on his cock.

“Fuck! FucK! FuCK! FUCK!” Hermione screams got louder with every slam of her arse down on Harry’s hips. She was so engrossed with feeling the cock splitting her open that she didn’t notice that Harry didn’t have his eyes on her.

Lavender was frozen in place, her face progressively redder by the second as she stared at Harry while Hermione fucked him.

She was moments away from backing out and hoping that Harry would keep this quiet when he destroyed all chance of that happening.

“Looks like we have some company, love.”

Hermione shuddered as she planted herself on the base of Harry’s cock and sheathed every bit of his shaft inside her. She gave him the best glare she could possibly muster in her state, which wasn’t much of a glare at all.

“Harry,” Hermione said between pants, “As much as I like to hear how much you love me, I told you there’s a time for it. What I want you to do right now is fuck my brains out till all I can think about is your cock.”

Lavender’s eyes widened, never imagining Hermione could even think of those words. “That’s so fucking hot.”

Hermione stiffened at hearing a feminine voice that wasn’t hers. She slowly turned her head to see Lavender Brown at the room’s entrance, staring at them with a flushed face. The next thing Hermione saw was the evidence of Lavender’s arousal.

Two hard nipples that could be seen clearly through her clothes, not that Hermione thought there was much covering them in the first place. She had never seen Lavender wear this shirt, but it made her breasts look fantastic.

Hermione never showed affection in public, one of the biggest reasons nobody knew that she and Harry were together. Still, her first instinct right now wasn’t to cover up. It was the complete opposite.

“Oh, Lavender. Did you and Ron want to use this room? Harry and I are in the middle of something.”

That snapped Lavender out of whatever state she was in. She had come here to find Ron and Hermione. Instead, she discovered the other part of the golden trio fucking each other’s brains out.

“I-I thought Ron was cheating on me… with you.”

Hermione gasped when Harry grabbed her arse possessively, pushing his cock deeper into her pussy.

“What made you think that?” Harry growled, getting angry simply thinking about it.

“Hermione was staring at Ron when I was kissing him,” Lavender said unsurely, wondering if she saw things through a tint of jealousy, “Ron was always doing the same. I thought it was a cruel game they were playing on me.”

“What?” Hermione confusedly asked, “Watching you two kiss made me want to fuck Harry. It had nothing to do with Ron. And what do you mean he was staring at me?”

Harry thrust his hips up to remind Hermione whose cock was inside her. “I told you Ron was trying to make you jealous. And you thought he kept looking at us to show off his pretty girlfriend.”

Hermione gasped as Harry gripped her hips and lifted her slightly before letting go, letting gravity do the work. That was a prelude to what was to come. With no regard for the spectator, Harry started to forcefully bounce Hermione on his cock.

The brunette tried to support herself by planting her hands on Harry’s chest, but the rapid thrusts into her pussy made her lose the ability to control any of her body, let alone her arms.

Harry grunted when Hermione fell on his chest, but he didn’t let that affect him. If anything, the feeling of her soft breasts pancaked on his chest, and her soft mewls as he fucked her through orgasm after orgasm motivated him even more.

Lavender was left questioning what she was doing. Not just about being in a room she obviously had no place in but what she was doing with Ron. From what Harry said, he already suspected that Ron was trying to make Hermione jealous. As for the girl herself, she probably had a blind spot because Ron was her friend.

That didn’t change the fact that Ron had been using her as a tool to make the actual girl he liked to notice him. Lavender didn’t like that. She didn’t like that at all. Any boy she dated should be as obsessed as Harry seemed to be with Hermione.

“I’m going to cum, Hermione!”

“Mm,” Hermione weakly kissed the bottom of his jaw, “Inside, Harry. Cum inside my pussy.”

“Fuck!” Harry groaned and pulled Hermione’s pussy to the base of his cock, sinking his fingers into her jutting arse as he tried to shove every bit of his manhood into her. The first shot he released into her was a relief for both of them. It lessened the pressure Harry felt in his balls, and Hermione felt like she was finally quenched of a thirst she didn’t even realize she had.

The following blasts of cum were the cherry on top. Harry wanted to leave his seed deep inside the girl he loved while having it act like a primitive marking saying Hermione was his. By the time he was done filling her pussy, Hermione could feel his release dripping down her thighs.

“Wonderful as always, Harry,” Hermione sighed into his chest, “I love you.”

Harry kissed the top of Hermione’s head with a smile until a movement in the corner of his eye got his attention. He looked up to see Lavender shifting in place with a fire-red face. He had entirely forgotten about her.

“Er, Lavender, sorry about that. Is there something you need?”

“Oh!” Hermione turned her head and realized that Lavender had a perfect view of Harry’s cock plugging her pussy. Since she didn’t have her thoughts wholly occupied by the fucking she had been receiving, embarrassment was an emotion she now had the ability to feel.

However, her attempts to move were unsuccessful. Harry refused to let go of her arse and kept her in place to keep his cock sheathed inside her pussy.

“I’ve never thought I’d want to eat pussy. But here I am.”

Harry and Hermione froze, looking in unison at Lavender, who was staring unabashedly at Hermione’s cock-filled opening.

“You’re dating my mate,” Harry commented flatly, though Hermione could feel his cock getting harder inside her.

“Not anymore, I’m not,” Lavender denied. As if she would keep letting that arse toy with her. Instead, toying with the arse she could see in front of her seemed like an excellent idea. It also helped that Lavender would get her lips on the girl her ex-boyfriend liked.

Hermione leaned closer to Harry’s ear and whispered, “I can tell you want to agree.”

Before Harry could deny it, Hermione said, “Don’t try to argue. Your cock tells no lies, Harry. I’ll agree, but only if it’s a one-time thing.”

Harry stared into Hermione’s brown eyes to see if this was some sort of test. With how sincere she seemed, he doubted it.

“We’ll agree on one condition.”

Lavender nodded as her breaths became faster, already thinking about what would come.

“This stays between us.”

“Done,” Lavender agreed and immediately started to unbutton her shirt. She smirked when two sets of eyes closely watched as more of her unblemished skin was revealed.

“I was so sure my breasts were far above yours, Hermione,” Lavender commented as she unclasped her bra and slipped out of her skirt, “But I guess bigger doesn’t always mean better. Though, I still think I top your perfect handfuls.”

“Thanks,” Hermione laughed, “That’s what my Harry calls them too, and I’d agree. I always loved how your breasts looked.”

Harry wondered if this was devolving into some sort of strange girl talk. He flexed his hips, moving the cock still inside Hermione to remind her he was there.

Lavender giggled at the gasp Hermione let out and said, “You wouldn’t mind if I dived right in, do you, Hermione?”

“No,” Hermione moaned as she closed her eyes as Harry’s cock made short thrusts in her cum-filled pussy.

“OH!” Hermione flinched as Harry tensed under her simultaneously. They turned to see the top of her blonde head visible over Hermione’s arse, with her face buried between their legs.

They couldn’t see Lavender’s face, but they could certainly feel what she was doing. The blonde was cleaning Harry’s shaft while occasionally trying to slurp the cum deposited in Hermione’s pussy.

Hermione shivered at feeling a smaller tongue lapping at her. Staring into Harry’s beautiful eyes made it even better. She gave him a soft kiss as she enjoyed the new sensation.

“This is nice,” Hermione said lightly as Harry started to fuck into her pussy at a faster pace.

Harry grunted in agreement, trying to avoid dropping another load of cum deep inside Hermione much faster than usual. In his defense, he never had a busty blonde giving his shaft a tongue bath while fucking Hermione.

“Lavender!” Hermione’s back arched, giving Harry a perfect view of her tits, “Fuck!”

Harry could tell that his love wasn’t against whatever Lavender was doing, so he was happy to keep up his thrusts into her tight pussy as it started to clench rapidly around his pounding shaft.

“Oh, fuck, Harry! Lavender’s tongue’s in my bum!”

Harry paused for the briefest of seconds before he restarted his thrusts. He pulled Hermione back down to his chest to look over her shoulder to see Lavender between his girlfriend’s spectacular arse. Her tongue was as deep as she would get it to go, and when Lavender saw that Harry was staring at her, she winked and squeezed Hermione’s firm cheeks.

“Fuck me,” Harry muttered before he groaned loudly in Hermione’s ear, “I’m cumming, Hermione. I’m going to fuck you full of my cum while you get your arse eaten!”

Hermione shook in his arms as she followed Harry into an orgasm. It might have been the best of her life so far, most likely because of the extra stimulation of Lavender’s tongue inside her bum.

Lavender didn’t stop her task. She wanted to be between these cheeks, and now that she was, there were no regrets. Lavender stayed locked onto Harry’s gaze as he came inside Hermione’s pussy, just as he stared right at Lavender as she tongued Hermione’s ass to make the best orgasm of her life ripped through her body.

“OHH, FUCKK!”

Hermione fell limp on Harry’s chest, feeling like every bit of energy was drawn from her body. She shivered when she felt Lavender pull her tongue out before giving her arse a kiss.

“Do I get a turn with Harry? Or is that going too far?”

Hermione lazily opened her eyes at Lavender’s question. “I would say no, but I never had anyone tongue my bum before. What do you say, Harry?”

This time Harry wasn’t sure. Having sex with Lavender would be a step beyond what had just happened, though he couldn’t explain how exactly.

“This is a one-time thing, Harry. I won’t mind,” Hermione reassured when she saw his hesitation. She winced and fought through the soreness to shift position, moving off his cock to lay beside him.

Harry’s cock was still rock hard, glistening with Hermione’s juices as it pointed straight into the air. The most obvious thing for Lavender to do would be to replace Hermione and straddle Harry, but she surprised both of them by climbing on top of Hermione.

“Lavender! What’re you doing?” Hermione gasped when Lavender nipped at her breasts.

“I’ve had my tongue in your arse, and I haven’t even kissed you yet,” Lavender lightly bit her nipple before kissing her jaw, “I don’t think that’s right.”

Harry had never been so turned on and yet, at the same time, so damned jealous. The only consolation was that Lavender motioned for him to get behind her. He didn’t dawdle and got on his knees before positioning himself behind Lavender’s raised arse.

That by itself was enough for anyone to stay hard, but Harry could also see Hermione’s pussy leaking the copious amount of cum he had unloaded inside. What more could a wizard ask for?

Harry gripped Lavender’s wider hips and wasted no time before pounding his way into her wet pussy.

Lavender moaned into Hermione’s face and gasped, “You’re boyfriend’s inside me, Hermione. He’s fucking me. Fucking me so good.”

Hermione stared at Lavender’s flushed face as Harry pounded the blonde, making the girl rock back and forth above her, moving her in turn. Surprisingly, Hermione felt more proud than anything else. “You’re going to regret having Harry inside you. Who can you meet in the future to replace him?”

“Oh! Fuck!” Lavender gripped Hermione’s shoulder as Harry pounded through her orgasm. Her blonde hair stuck to her face from the sweat the next time she focused on Hermione. “I don’t care. I’ll worry about that later.”

Soft lips muffled Hermione’s reply when Lavender pulled her into a kiss. Harry started fucking into blonde’s pussy faster when he saw what was happening before him. He gathered Lavender’s hair in his fist and pulled harshly, separating the kiss she shared with his girlfriend.

Harry bent over to plaster his chest to Lavender’s back and moved her face aside to capture Hermione’s lips for himself. He groaned into his girlfriend’s mouth as he repeatedly battered Lavender’s pussy, trying to get his release as quickly as possible.

It would have been an issue before since he had already come inside Hermione twice a short time ago, but the situation today was unique.

“I’m about to cum, Hermione,” Harry whispered into her lips as Lavender squealed through another orgasm next to them, “Where should I do it.”

Hermione bit her lip and looked at Lavender’s unfocused eyes. The blonde deserved a gift for what she had done.

“Inside. Give Lavender something to remember for the night.”

Harry snapped his hips forwards, making Lavender yelp when his groin slammed into her arse harder than before. He kissed Hermione again as his balls worked overtime to produce enough cum to dump into Lavender.

Harry fought against Hermione’s tongue as Lavender’s pussy milked his balls dry, greedily accepting all the cum he had to give. He gave her tight hole a few more thrusts to get the last few stragglers out of his shaft.

“Fucking hell,” Harry groaned while pulling out of Lavender, “That was incredible.”

“Mm,” Hermione nodded as she hugged a drooling blonde and patted her back, “Too bad it was only for this once.”

Harry gave Hermione a curious glance at her tone but didn’t question it as he lay his head back. There was plenty of time to discuss it later when they weren’t exhausted and well-fucked.