Appeal to her sense of voyeurism

"Hey Nebula... Do you... maybe... want to watch Sam and I... do it...?" Zoe asked, slowly. What was even going to accomplish?

You heard nothing from Nebula for several seconds, save for quiet breathing. Nebula poked her eye through her peeking hole.

"Okay, we're going to... muh... make love now!" Zoe said cutely, smiling despite trembling nervously. Zoe's pelvis grinded against your exposed shaft, making you involuntarily shiver. Nebula stared intently at Zoe's movements.

Zoe leaned forward, kissing you softly, wrapping her arms around your neck. She nibbled your lip, coaxing your mouth open. Zoe's tongue entered your mouth, circling your own, licking the roof of your mouth. You started breathing faster as Zoe explored your mouth. You believed this must be all an act, Zoe and you putting on a show for Nebula, until Zoe suddenly pushed herself upwards, breaking the kiss with a wet pop noise, before sitting back down hard. The **** caused your penis to bounce upward, ramming straight into Zoe's vagina.

"Wahh~!" Zoe moaned sensually, her eyes rolling back. Your cockhead was barely inside of her, twitching erratically as Zoe's tight folds squeezed you.

"Wait, wait!" You called out in panic to Zoe. She instantly obeyed you, resting on top of your chest. You both caught your breath, recovering from the sensation of penetrating. Zoe looked at you with a slight grin, and then closed her eyes, her eyebrows furrowed in focus. Her hips rocked backward and forwards in the cramped space, sliding your cock deeper into her slick cunt. Zoe stopped when only a third was inside of her.

Zoe looked like she was on the verge of cumming already, but she kept rocking herself against you, taking more inches each time. Zoe started to pant in exhaustion, beads of sweat forming on her forehead. Your erection pulsated inside of Zoe, causing her to shudder spastically whenever she stopped moving. Finally, Zoe's labia rested against your crotch, leaving your entire shaft buried inside of Zoe. Zoe sat still once again, focusing on getting used to you filling her womb.

Nebula had moved to another spot, trying to get an eyeful of the connected genitals of you and Zoe. You could catch much more of Nebula's body than you could before. Nebula was open mouthed drooling, staring at Zoe grinding against you. One of her hands snaked down her shirt, beginning to masturbate openly to your coupling. You didn't want to admit it, but seeing Nebula lewdly ogling you turned you on immensely. Your cock swelled bigger inside Zoe, making her yelp in pleasure.

Zoe started raising herself off of your cock slowly. You could feel every bump and crevice in Zoe's vaginal walls, forcing your shaft outward, causing both you and Zoe to groan deeply. Zoe slammed herself downwards, sending ripples across her plush ass cheeks, taking your length inside of her instantly. Both you and Zoe gasped, panting heavily as the blended feeling of each others' genitals overtook you.

The pace was agonizingly slow, thanks to the cramped space you were stuck in. Each time Zoe fell back on top of you, you felt your ballsack slap against Zoe's soft skin. The rhythmic slapping noises echoed under the bleachers stands, drowned out occasionally by either you or Zoe's grunting. Nebula started panting loudly as she fingered herself faster, attempting to match Zoe's pace. Nebula's other hand massaged her clothed breast furiously, the outline clearly showing how hard her nipples were.

Zoe started to lose energy, struggling to lift herself off your dick again. You grabbed both sides of her asscheeks, squeezing them lightly. Zoe squeaked happily in response. You guided Zoe up your rod, before slamming Zoe back down onto you. Zoe gasped, before giggling childishly, smiling brightly. Zoe placed her hands on your chest for support and began riding your member quicker.

You noticed Nebula matched Zoe's speed now, hunching over with both her hands inside her shirt, thrusting her hips into her palms. Nebula started biting her lower lip, gritting her teeth as you and Zoe fucked each others' brains out under the bleachers stands.

You could feel pressure building inside of you. You tried to slip your penis out, but Zoe immediately guessed your intentions, frantically shaking her head, staring into your eyes lovingly while putting her full weight down on you. She wasn't going anywhere.

"You forgave me before, right? You don't mind if I'm a little naughty right now?" Zoe purred seductively, before grinning ear to ear cutely, winking. You couldn't take it anymore. Whatever voice that said "No, don't cum inside girls you just started a relationship with!" was dead and buried, probably for good. You grabbed Zoe's pillowey ass and started thrusting upwards wildly.

You didn't know why Zoe went quiet as you pounded her. Zoe's mouth hung wide open, gasping for air silently as you jackhammered against her deepest parts. Nebula continued masturbating, speeding up to your breakneck pace as she watched you ram your cock into Zoe. Your ejaculation was imminent, judging from your cock bulging and throbbing nonstop. Zoe's eyes rolled into the back of her head, drool leaking out of her slack jaw, and onto your shirt. Zoe's cervix contracted around your dick, her inner walls constricting your penis violently as you rammed into Zoe. Nebula's chin rested on the bleachers and her face had morphed into one of pure bliss, her eyes glazed over blankly. She clearly came before either you or Zoe.

Finally, you felt Zoe's vaginal muscles seize up. Zoe let out an explosive squeal that deafened you momentarily, burying her face into your neck. You felt semen rocket out of you as Zoe came with you simultaneously, spraying what felt like the biggest load of your life directly into Zoe. Zoe's convulsions milked you dry, bloating Zoe's stomach slightly from your volume. Your semen oozed out of Zoe's filled womb and down your shaft. Your cock started to shrink quickly, slipping out of Zoe's now tender womanhood. Zoe gasped, whimpering from the empty feeling you left inside her. Semen leaked freely out of Zoe's vagina, pooling underneath your buttocks and legs, warming your nether regions. Nebula recovered from her orgasm first, staring unabashedly at your afterglow second-hand. Zoe lay limply on your body, completely spent. Nebula's gaze traveled from Zoe's disheveled hair to your cum-soaked groin area. Zoe shivered and moaned gently as she regained consciousness.

"Ah-Sam...? Did I do good...?" Zoe asked, meekly, resting her head on your shoulder. You pat her head, smoothing out her messy hair.

"Yeah..."

"Nebu-laaa... Do you want to help us out?"

"... Fine. I... think I can pull you both out... Just don't pull too hard."

Nebula walked around the bleachers where you couldn't see. Suddenly, you felt a coiled piece of fabric hit your forehead. You and Zoe grabbed it, and using it to steer as you pushed your legs, you suddenly saw the sun flash infront of your eyes... Along with a completely nude Nebula standing awkwardly.

"...Why are you naked?" You groaned, averting your eyes from Nebula's sweaty pale skin. Nebula said nothing, and you noticed you were holding Nebula's shirt as a rope. Nebula tugged it out of your clenched hands as Zoe stood up, your genitals pulling away. Zoe blushed as you separated and a glob of cum fell out of her.

You were about to thank Nebula, before noticing she was still completely naked, biting her lip, eyes glued to your cock. You scrambled to get your pants on, only to realize your pants were still under the collapsed bleacher. You were now only wearing a shirt, just like Nebula. However, yours had no way to actually cover your bottom half without pulling it down with your hands.

Nebula made no attempt to get dressed yet. She simply stood there, looking expectantly at your softening penis. "Is it... uh, my turn? To... uh... with Sam...?" Nebula spoke weirdly quietly, wringing her hands nervously.

"Your turn...?" You looked at Zoe, but instead of any hint of possessiveness, she seemed almost happy Nebula asked to screw you next. "Um... Nebula, do you want to apologize to Zoe?" You asked hesitantly, trying to ignore what Nebula said. You prayed that this was some kind of post-sex daze that Nebula was experiencing, and she'd revert back to her normal craziness...

Nebula scratched the back of her head, avoiding your gazes. "Uh... Yeah... Look, um, Zoe... I'm sorry... for calling you a European...I didn't know..."

Huh?

"Its okay... I forgive you." Zoe seemed really happy to hear that, for some reason. "The next time Sam gets ready, he's alllll yours."

"Heh, well... if you insist... it would be pretty embarrassing to walk around with a boner that big."

The three of you walked back to school, genitals fully exposed. You felt like you were hit by a flashbang, everything blurry and your sense of hearing messed up. You just had sex with Zoe, under the bleachers stands...? Nebula apologized calling her European? Its almost like you skipped three or so chapters of of a story somehow.

Was everyone going to start having sex with you now? Are you actually the protagonist of some porn novel?

Was... Nebula actually right?