An invitation from Shelly.

You answer your phone without even looking and are pleasantly surprised when you hear your sister's voice on the other end of the connection. "Hey, lover!" She says warmly. You can hear some noise in the background that sounds like she might be riding in another car, a muted radio station playing a song just low enough that you can't tell what it is and other traffic noises. "So Scarlett and I were thinking that we should probably hash out some of the details on how she's going to be your beard. You know, how she's going to pretend to be your girlfriend while you're actually boning me every night!"

You hear a musical laugh that you recognize as coming from the beard in question. Words are spoken that get garbled before reaching your ears and Shelly giggles in return. "What? Am I lying, you perverted little skank?" Another burst of unintelligible speech. "Don't worry, we'll discuss that when arrive. Calm your fucking panties." The conversation turns back to you. "So we were hoping you could meet us at Scarlett's house. We're out of school and on our way there now."

"Sure," you reply after she gives you the address, doing some mental calculations in your head. Coming from your father's downtown office actually works out really well; Scarlett's address is is only a short distance off the route you were planning to take home anyway. "I'll probably be there in twenty minutes or so."

"Great! We're pulling in her driveway right now. We'll see you soon! Love you!" You return the farewell and concentrate on driving. The phone call from Shelly has driven the event with your father's secretary from your mind, replacing it with thoughts of your sister and, to an even greater extent, her best friend Scarlett. You wondered exactly how far you and she would have to go to sell your fake relationship, or more accurately, how far she'd be willing to go. Judging from her assistance last night, stepping in when your father was acting like an asshole, and then her pep talk afterward, it's farther than you would have imagined just a week ago.

You find Scarlett's home without difficulty, a large, modern three-story house that stood out even in a neighborhood of well-maintained, upscale houses. The facade is mostly brick, with splashes of yellow siding adding accent areas and a giant piece of architectural glass is prominently displayed beneath the vaulted roof. It's enormous size and manicured yard, with perfectly coiffed shrubbery and colorful flower gardens, spread out over what must be at least five acres, screams wealth. A large white privacy fences sweeps from both sides of the house before shooting back and presumably encircling a large part of the backyard.You'd never really paid attention to what Scarlett's parents did for a living but, based on what you see as you park near the three-car garage, it must pay extraordinarily well.

You climb a short set of stairs and push the doorbell, eliciting a low tone similar to a church bell. For a moment, nothing. Then you hear a voice from around the side of the house.

"Come on back! We're in the backyard." You can't tell whether it was Shelly or Scarlett who called out, but you figure an invitation is an invitation.

You follow a cobblestone pathway to the west side of the house and find a gate in part of the fence. The latch has already been undone. One of the girls probably took care of it knowing that you were coming. You swing it open and spring hinges slide it closed behind you as soon as you release it. Giggles echo from close by and you step around the far corner to find a mind-boggling large, sparkling pool and two equally mind-boggling, amazingly hot nymphs lying on chaise lounges, wearing very tiny swimsuits.

What a pair of fucking tarts, you think as you stare at the girls and their revealing attire. I bet they planned this whole scene out just to get a reaction out of me. And they're fucking succeeding.

Blood rushes to your groin as you take in the teenage girls and the vast amount of skin they're showing. Shelly is wearing a classic bikini, with light blue pieces that you're utterly sure were selected because they match the color of her eyes. The top is designed more for looks and less for function, with the small fabric triangles used for coverage rather than support. Given your sister's rather giant rack, her titflesh is spilling out everywhere with her cleavage, sideboob and underboob all making a spectacular appearance. The bottom is low-cut, swinging around her hips in alluring curves and, if you had to guess, diving between her buttcheeks and disappearing without a trace. If she hadn't been shaved smooth, parts of her bush would be peeking out.

Scarlett is wearing something a bit more _haute couture. _Her swimsuit is a basic black, with twin straps sweeping down from her shoulder and blossoming out into slightly thicker lines as they reach her breasts. They remain separate until well past her navel, coming together just above her pussy and slipping out of sight beneath her scrumptious ass. One additional piece of slim fabric connects the two parts together at the peak of Scarlett's bust, with a simple gold ring at the center. The ring not only helps to hold everything in place, but serves as a great attention grabber, drawing your eyes to the slopes and valleys of your former fantasy girl's beautiful tits. Shelly probably has the larger pair between the two, by about a cup size or so, but her best friend is hardly lacking in the mighty melons department and you feel a bit dizzy from blood relocation as you stare openly at her.

Scarlett turns her head at your approach, a pair of dark sunglasses perched on her face. "Well, look who's here, finally." She dips her head almost as if bowing. "All hail the conquering hero! The manly stud who chivalrously plucked the delicate flower of this lovely lass's virginity and left her begging from more. Has the world finally found a man worthy of the crown?"

Shelly laughs at her friend's overly dramatic and you find yourself doing the same. You take a seat at the end of your sister's lounge and lay a hand against her calf, unable to resist touching her even a little bit. Her blonde hair is piled atop her head, helping her stay cool as the sun shines down. "Oh, please," Shelly waves a hand at Scarlett. "I wasn't exactly a virgin, you know that."

Scarlett tilts her head so that she can look over the rim of her sunglasses with a pointed look. "I wasn't talking about your sweet pussy, my dear."

Flames immediately crept up your sister's face as Scarlett leaned back and settled herself into the chair's cushions. Shelly glanced up at you, a slight pale of embarrassment on her face at being caught having shared the details of your date from last night. You slide your hand up her thigh, dip below the edge of her butt and give her a sharp goose that causes her to shriek and jump away from your pinching fingers. Her tits jiggle wildly, threatening to spill out but by some miracle, or some devilish trick, they remain ensconced behind her bikini top.

"Yes, well, she's always had trouble with keeping secrets." You let the hint of a growl appear in your voice, letting her know that there could be consequences later. Her lips curve in anticipation. She hands you a bottle of sunscreen and bites her lower lip in a sultry, wordless appeal. You take it and squirt some on your hands as she turns over to give you access to her backside. "For example, we were supposed to approach you slowly, discretely to discuss our relationship and how you might be able to help us. Instead, she comes running to you for a dress for our date and spills the beans immediately."

You start on her toned legs, rubbing the lotion into her skin with long, firm strokes. You make sure the slippery white cream disappears completely before moving onto each section, moving slowly upward, skipping the swell of her cheeks to coat her back first. Your fingers slip under the string of her bikini as Scarlett replies. "Well, you can't really blame her for that. When she arrived, begging me for an outfit that would 'drive a man crazy with lust and desire,' I wouldn't agree to help until she gave me all the torrid details."

Your hands drop back to her butt. You were right, the skimpy bottoms have been completely eaten by her asscheeks and you have almost no impediments as you squeeze and knead her supple rearend. With a light slap, you indicate you're done with her backside and your sister turns over so you can begin on her front. And, unable to be ignored by anyone present, her swollen nipples have made a dramatic appearance, creating twin points underneath her bikini top and indicating the arousal she's feeling from your hands working their magic on her nubile body.

"And I assume that the dress I gave her did it's job, didn't it? It 'drove you crazy with lust and desire,' did it not?" It's hard to tell because she's wearing sunglasses, but you think she's turned her gaze to you and Shelly, eyeing you with interest as you slather sunscreen on your sister.

"It did," you admit. Since Scarlett already opened the floodgates on what consisted of 'too much information,' you decided being open wouldn't hurt anything. "In fact, I got hard the moment I saw her coming down the stairs, stuffed into that tiny little dress and I basically stayed that way the entire night. Hell, I'm pretty sure our waiter had to jerk off a couple of times while we were being served at the restaurant and I don't think there was a soft dick left in the place when she stood up and walked out."

You finally make it to Shelly's tits and you start by running your finger around the edges of her bikini, softly digging into her skin. She barely keeps in a moan but she squirms in her seat, erotically rubbing her thighs together at your touch. The curves of her underboob are next, followed by the exposed skin to the side of her bikini, spending just a bit longer than necessary to make sure she's properly covered. For the finale, you place a dollop of lotion deep in her cleavage and spread it around thoroughly, pushing beneath the string connecting the triangles atop her titties and leaving every inch with a a slick shine.

"I don't doubt it," Scarlett says a little roughly. "She looked damn fine, if I do say so myself." She raises a knee and stretches her arms out, enlongating her lithe form and drawing your attention back to her. "But let's turn the subject back to something more important. Namely me...and you...and our newly minted relationship."

You pick up the sunscreen and move over to Scarlett's chair, unable and unwilling to hide your erection. As you settle into place next to Shelly's best friend, you look over at your sister and ask, "Do I have your permission?"

A delighted grin spreads across Shelly's face. Horny as she is, she's still focused enough to be pleased that you remembered your promise to her, that you would always get her approval in the real world first. "Of course," she says. Then, as you begin rubbing lotion on Scarlett's left leg, she begins to lay out what she had in mind.

"Essentially, you would act as a cover for my brother and I anytime we want to do things that a normal boyfriend and girlfriend would do. You know, hang out, go on dates, be intimate."

Scarlett places her right leg in your lap, dangerously close to your hard cock. "You mean fuck like bunnies." Not a question but a statement. Shelly seems to have gotten over her initial embarrassment and just nods her head, smiling broadly. "And what do I get for my efforts? I mean, I don't mind helping out a friend but I wouldn't mind getting some compensation as well."

"Well, in return," you say, taking over for your sister, "You'll get me. You'll join on use some of our dates, when appropriate to hide our interactions, and I'll also take you out, just the two of us. You can choose were we go, what activities we do and I'll shower you with as much attention and gifts as you deserve." Honestly, it sounds a bit vain and conceited when you lay it out like that. You're her prize for the entire endeavor? Her best friend's brother. Surely you're not worth it. But Scarlett seems to give the argument some weight and you wonder just how strong of a crush she really has on you.

She sits up, her boobs wobbling on her thin frame. She draws your hands higher, until you're cupping her sweet mammaries, your palms sitting atop her swimsuit. You can feel their warmth through the delicate material and your mind spins at finally having these beauties beneath your touch.

"And if I want more?" The question hangs between the three of you. You look over to Shelly, letting her make the decision. She's already given you permission, but you want full clarity from her directly regarding how far you can go.

Shelly just shrugs and tucks her feet under her, turning until she facing both of you directly. "You are both consenting adults and you can go however far you want. I know my brother well enough to know that our relationship is strong enough to handle other people sharing in our love and I believe that no matter what, our bond will never be broken. So you guys can do whatever you both are comfortable with. I won't set any limits on either of you." She tucks a stray hair behind her ear and winks a saucy blue eye at Scarlett. "Plus, isn't this what best friends do? Share everything?"

Scarlett only takes a short moment to consider the offer and then says, "Ok, deal." Then she stands up, leaving you cupping empty air. She arches her back, thrusting her chest forward and wriggling her toes against the stone patio. "I think I'm going for a swim. Care to join me?"

Without waiting for a response, she steps to the edge of the pool and dives in with barely a ripple, her form flawless. Shelly shakes her head, obviously used to her friends antics and stands up too, adjusting her bikini with a few deft movements. "I don't have a swimsuit," you say.

Your sister gives you a quick peck on the cheek as she slides by. "Just wear your boxers, dumbass. We won't mind." While many things have changed between the two of you, she's still your bratty little sister at times. Your pants hit the ground just as Scarlett resurfaces and she stares at your crotch with unveiled interest.

"Impressive. Very impressive." She doesn't give any further critiques than that, but lays on her back and idly floats while watching you disrobe. As you move to the pool's edge, you can feel your dick bounce underneath your boxers, throbbing with desire, ready for action. You jump in, tucking your body into a perfect cannonball and give the two girls a giant splash of water to their faces, laughing as you break the surface to find them sputtering indignantly. With matching howls, they spin in place and start to swim after you with vengeance in their eyes.

The rest of the afternoon turns into one giant game of chasing each other around the pool. There are no formal rules--or the rules changed constantly, it's hard to tell which. As soon as one person is 'captured,' alliances are formed between two other members and the chase starts all over again. Hands are very free and the method of 'capturing' somebody almost inevitably involves grabbing whatever body part is in reach. It's not unusual for you to find yourself with your hands wrapped around a firm pair of buttocks or sliding underneath their large titties for a quick squeeze, all without complaint from either teenage hottie. The girls were equally unrestrained, both with you and each other. Seeing them caress each other's almost naked bodies is probably the highlight of your entire life and you doubt your shaft has ever been harder or longer.

By the end of your horseplay, your boxers have failed magnificently at keeping your contained, your dick jutting from your groin like an overgrown lance. Shelly makes it a central target of her groping, giving it a few quick tugs before splashing away in a spray of water and jiggling flesh. Even Scarlett gets in on the lewd play, letting her hands brush against your pole with a frequency that belies any sort of accidental contact.

Finally, you and your sister corner her half-Asian friend in the shallow corner of the pool and she tries to escape by climbing out but you're too fast for her. Just as she's about to pull herself free, you grab her by the waist and pull her back into the water. You pull a little roughly and her ass slams back into your groin, trapping your raging boner between the velvety cheeks of her ass. Before she can react, your sister comes crashing in, laughing hard, and pins you together in a sandwich of hot flesh. You find yourself stuck between two giant mounds and a soft place, with Shelly's huge titties smashed against your back and your hard dick wedged even deeper between Scarlett's buns. You've died and gone to heaven.

And then Scarlett wiggles ever so slightly, sending sparks down your length to your root. You feel an orgasm start to build and you moan happily.

"Mmm," she murmurs. "Guess it's time to get out."

Wait, what? Your mind has trouble processing her words, lost in a haze of your desires. Even as she slips out of your grasp and slides out of the pool, water dripping off her exquisite form, you don't really believe it's actually happening. She can't leave me like this! Shit, my balls are bluer than the fucking sky.

Shelly's voice breaks through your disbelief, a barely repressed giggle just under the surface. "Didn't I ever tell you what a tease she can be sometimes? I think this is her **** because you had sex with me first." Your sister breaks free too and heads to where her towel is on the patio. She dries herself off and, while you enjoy the sight, it can't compare to where you'd been just moments before. Shaking your head, you climb out of the pool.

Shelly hands you an extra towel, a smirk still across her face. Her smug expression reminds you of her inability to keep your relationship from Scarlett and that you still owe her for that lapse of judgement. You set the towel aside and step in close to her. Time to pay the piper.

You grab your sister by the waist and push her down onto the empty chaise lounger, her towel falling to the ground and exposing her lush form to you once more. You stick your cock right in her face. "And you, little miss 'I'm going to tell all my dirty, incestuous secrets to my best friend before talking to my brother about it,' are you a fucking tease too?"

Shelly's blonde head shakes back and forth in the negative. Her eyes light up as you push forward and her lips part without hesitation, opening wide enough to take your thick rod deep into her sensual mouth. As this is in punishment for her earlier behavior--and because you have the worst case of blue balls ever--you have no intention of taking things slow and easy. Instead, you grab her head with both hands and **** every bit of cock you can into your sister's waiting throat, barely pausing as you hit her tonsils and slide past them. You're barely in control, fucking her beautiful face with abandon, unable to hold back your sexual frustration. Judging from her reaction though, she seems to enjoy the authoritative way you're treating her, with one hand dropping down to tweak at a nipple that has finally popped free from her bikini while the other rubs frantically at her pussy.

It's not a pretty blowjob but it doesn't matter. In less than two minutes, you're ready to blow. "Swallow it, swallow it all," you order your sister and you see Shelly nod, eager for your jizz. You hold her head in place and let loose, filling her mouth with an afternoon's worth of pent up cum. She groans as she sucks it all down, her throat bobbing with each load that disappears into her stomach.

"Holy fuck, that was hot," Shelly confesses when you finally pull away from her. "You should take control like that more often. I almost came from giving you that blowjob. It felt so good." She kisses you on the lips, your taste still on her. "I really like it when you dominate my like that. Maybe we can...continue this discussion at home. With even fewer clothes on?"

How can you say no to that? Grinning, you put on your dry clothes and watch as Shelly rewraps herself in her towel. You give her ass a smack when she's done and she sticks her tongue out at you in return, flipping the edge up so you can see the red mark your hand left on her skin. The she darts away, running around the corner before you can even move, racing to be the first to the car. Before you reach the edge of the house, a movement catches your eye.

You look up, but the only thing you see is a curtain swaying back and forth in a window two stories up.