You pace around your room. In less than an hour you're supposed to meet your friend Matt for a double date. Matt managed to score a movie date with Dawn, one of the hottest, preppiest girls in school. But only on the condition it was a double date, and you can't find a girl to go with you. Desperate to not let down your friend and to find a date, you consider your sister. Gaia is 15 years old, a dyed in the wool goth with fat tits. Blushing, you knock on her door.
"Hey, Gaia. Can I ask you a favor?" You call out. You wait for her to answer. Finally, she pulls the door open. "What do you want, Brother?" She demands.
"I need your help." You admit. "Matt has a date with Dawn, but she'll only do it if it's a double date. I know, it's sudden, I just found out myself. But uh, I need a date. And I was wondering if you'd pretend to be my girlfriend for the night.."
She looks at you in scorn. "You want me to do what?" She sneers.
"No! Don't look at me like that!" You blurt. "It's Matt. He has a date with Dawn, but she'll only do it if it's a double date." You explain the situation to her. Her eyes narrow.
"That bitch Dawn is going?" She asks sharply.
"Yep. So um, you said you would try and... er..." Your face burns red as your blush lingers on her toned figure. "Well, I know it sounds lame, but could you pretend to be my girl this evening? I can't let Matt miss his chance." You plead. "Besides, you can get one over on that bitch, Dawn."
She smirks slightly, thinking over what you're asking of her. You wait nervously as you watch her process the information. At length, she replies with, "I guess." She says. "Stay here while I change."
Her words make you happy and apprehensive at the same time. You nod in thanks and watch her disappear into her room, leaving you in suspense for what feels like forever. Finally, the door clicks open, and Gaia walks back out in all her Goth splendor. She looks amazing in all black clothing and with black hair and eyebrows covering up much more of her beauty than you ever knew about your baby sis. It was hard to see the faintest traces of green eyes and pink lipstick. You were mesmerized, almost falling to worship her at the door step.
She stands in front of you, a smile spreading across her pretty mouth as she watches you. "Like what you see, boyfriend?" She asks tauntingly.
Your mind races, but no matter how much you want to say 'yeah', your mouth remains mute. "Yes," You squeak out instead. You both have your fake date clothes on; She wore ripped leggings, calf high black boots, fingerless mesh gloves, a short skirt and a tank top that barely contained her large breasts.
Gaia snickers, "I don't blame you.Come on then. We should go, right now. We'll get the first showing of the movie." She leads the way.
As you follow your sister, you catch yourself staring up and down her legs. The dark leggings are tight, stretching the material so tightly they nearly reveal the bottom curves. Her ass moves with each stride as well, pushing her thick thighs against each other, giving her ass cheeks nice little bulges to rub up against. She might be your sister, but you couldn't help but notice. She knows you noticed, too. She keeps looking back at you. When you glance back, you see a smug smile on her full lips.
***
A tense car ride later, you reach the movie theater. Matt and Dawn are waiting for you. You greet Matt warmly, but you can feel the tension between the two girls instantly. They introduce themselves icily. As expected, Dawn is dressed provocatively in a low cut shirt and tight jeans, making her long, slender legs seem even longer. Matthew seems oblivious to the tension between the girls. He leans and whispers. "Dude, your girlfriend is smokin' hot." He grins.
"Thanks, man." You say uneasily.
"C'mon, don't be humble man. I mean, look at those tits." His voice rises a bit louder than necessary, drawing attention from nearby people, including Gaia.
You shuffle uncomfortably, discussing your sister's chest so openly. But you had to keep the charade up. "Yeah, they're pretty great. You don't really see tits like that on such a tight body." You whisper, hoping Gaia doesn't over hear.
"I agree. Now come on, we better hurry or our seats won't be good anymore." Matt urges.
"Right. Let's go." You reply.
The four of you walk towards the lobby, where you purchase tickets to the movie. Gaia and Dawn were still sizing each other up. The girls part ways, cutting glances at each other. Gaia grabs your arm and leans in. "Ready go, baby?" She asks you, putting a heavy emphasis on the pet name and glaring at Dawn.
You stare blankly at her until you realize she's talking to you. "Oh, yeah. Sure." You answer quickly, trying not to sound nervous.
"Don't worry, I gotcha covered." Gaia assures you.
"Great." You murmur.
"Now, let's go." Gaia pulls you toward the auditorium. As you stepped into the dark theater, she leans in and whispers, "I heard what you said about my tits." In the dark you can't see the expression her face, and you're glad she can't see you blush. What could she mean by that?
You have no time to ponder it as you find your seats. You and Matt sit on the ends, with the girls between you. The lights go down and the movie begins. Matt puts his arm around Dawn, and she leans into him, cutting a smug look at Gaia. Gaia glares at her jealously, before jabbing you in the ribs. "Put your arm around me, dummy." She hisses at you.
With out a thought you throw your arm around her shoulders and pull her close. She presses herself against your chest. The girls stare daggers at each other. What had you got yourself into?
After watching the first half of the movie, a scene comes in which the characters kiss passionately. You realize the sounds of lip locking aren't just coming from the screen, but from Matt and Dawn. They lean in closer together, their faces inches apart. Matt smiles wickedly as he kisses Dawn, who is smiling in return. Both of them are moaning loudly, with their tongues swirling in each others mouths. Suddenly, Dawn turns away from Matt and looks directly at you. Her eyes linger on yours for awhile, as if reading your thoughts. Then her gaze shifts to Gaia. A sly grin spreads across her face, as if she is enjoying the show.
"What's the matter, you two? Don't tell me you came here to actually watch the movie?" Dawn giggles. "C'mon you two, lighten up." She pats Matt on the shoulder. "We're supposed to be having fun here." Her eyes flicker over to Gaia again, as if noting something particularly interesting about her. "Since you already watched us, why don't you two give us a bit of a show?"
Gaia's eyes turn to you, she looks uncomfortable at the request to make out with you, her brother. Matt looks over pleadingly, asking you to keep the date going. You turn your eyes back to Gaia. Her plump lips, painted black, quaver indecisively. You..