[This story is based upon a much shorter story I wrote for Flash Fiction Friday, using the above image as a prompt.  When it was published in March, I was asked to write a longer version.  I don’t normally do requests, but I thought that fleshing out the characters and the circumstances of the original story beyond the 119-word limit would be a fun challenge.  Additionally, I looked forward to writing freely, without the constraint required of flash fiction.  What follows is the extended version of Green; read the original version here.]

Sabrina pressed her ear against the bedroom wall, listening as her sister got fucked on the other side.  She consumed each thrust with equal measures of voyeuristic delight and bitter envy, all the while wishing that she was the one experiencing such erotic bliss.

It could have been her.  It very easily could have been.  As her body began to heat up, she shed her clothes and began to run her hands up and down her flesh.  Her hands cupped her full, blushing breasts, finding nipples stiffening into erect peaks.  Her hands moved down to her thighs, feeling the warmth as the caressed them.  And when she could stand it no longer, she gave in and attacked the ripe, swollen bud that practically screamed for her attention.

In the neighboring bedroom, Katrina was bent in half, her ankles up by her head.  She had long ago stopped trying to stifle the sounds of her passion and her excitement.  It was impossible.  Sam’s cock was the best she’d ever had, thick and satisfying with a beautiful red head.  She imagined that it looked like a shiny fire engine as it pistoned deep inside of her.

Every stroke of his magnificence threatened to push her over the edge.  Katrina had been surfing a wave of ecstasy for the past hour, each orgasm more intense and all-consuming than the last.  She had already enjoyed so many orgasms that she’d long since lost count.  But the next one was going to blow her mind, that much she could tell.  She braced herself against the wall with her hands, and let her climax overtake her.  She screamed with release, opening her legs and clamping them around his back as though trying to coax him even deeper inside of her.

Her pussy squeezed Sam’s cock as she came.  Feeling him tense up, she knew his own climax was imminent.  When he began to fill her with his cum, her screams of passion became satisfied sighs of happiness.

Their lips met first, their tongues next.  It was a kiss like none she had ever experienced before, breathless and sensual, and if her heart wasn’t already pounding, the heat between them would have ensured that it was.

On the other side of the wall, Sabrina lay in her bed.  Her jealousy was made more bearable by the sexual climax she had just enjoyed.

It had been two months since that slow Thursday afternoon when Sam walked into their lives.  The café was empty and quiet, the lunch rush having just let up.  The small two-seat booth where he sat down would have been in Sabrina’s section had her twin not been called to replace a sick co-worker at the last minute.

Both women eyed the handsome, well-dressed man from behind the counter.  Sabrina offered to wait on him, but Katrina insisted that it was her section, and her responsibility. But she didn’t say it with the tone of a responsible young woman.  She checked her make-up in a mirror that hung on the wall, then took a menu over to his table.  Sabrina watched her fill his cup with hot, black coffee, watching her lean seductively against the table as she told him about the daily specials.

Though the two women were identical, Katrina wore her uniform with so much more confidence than her sister did.  The jade blouse fit tightly, hugging her curves.  Her matching skirt was perfectly pressed, her white apron spotless.  But that really wasn’t where the confidence came from, was it?  Katrina exuded confidence and grace in a wrinkled T-shirt and sweatpants.  In high school, she was the one surrounded by boys while Sabrina focused on her schoolwork.  Where lunch periods found Katrina sitting in the bleachers with her friends, Sabrina would while away the time in the school library, studying calculus, biology, and economics.

Sometimes, Sabrina wished she was that popular.  But at the same time she didn’t know if she wanted to have everything handed to her the way it was handed to her sister.  Everything Sabrina had, she had worked very hard for.  It would have killed her to lose sight of the value of work.  But as she watched Katrina carry a tray with the gentleman’s order, Sabrina wished she had at least been given the chance.

When Katrina brought his bill to the table, she made sure to include her phone number, along with “Call me!” written in blue ink.  In true Katrina fashion, the period at the base of the exclamation mark had been replaced by a garish heart.  As she caught sight of her sister’s message on the bill, Sabrina thought, How shameless.  I’d never be caught dead flirting so brazenly, certainly not with a customer.

But why wouldn’t she?  What, she considered, was wrong with having a little fun?  She’d put herself through school, she’d studied hard, she’d worked, and she deserved a little attention, the kind that Katrina sought out and enjoyed so freely.  That settles it, she thought.  The next cute guy I wait on is getting my phone number, whether he wants it or not.  She giggled with excitement as she considered the possibilities.  The café was always full of handsome, available men.

For the next two months, most of the men who sat in Sabrina’s section were either clearly attached – holding hands with their significant others or wearing very obvious wedding bands  – or else sitting with women who appear too old to be their daughters, and too young to be their mothers.  Though the body language between them never seemed intimate, she shuddered at the thought of doing the impetuous thing and leaving her cell number on the bill only to have their angry wives complain to the manager and get her fired.

And the ones who did appear to be available?  None of them were her type.  Some were too old.  One was way too old, older than her father, and she was not about to go there.  Most were too short, too slight, too obtuse.  Some seemed disinterested in her, despite her best efforts to flirt.  She wondered if they thought she was just flirting in the hopes of getting an inflated tip.  During one busy lunch rush Sabrina spent half an hour chatting playfully with a cute guy in a polo shirt and tan Dockers who she was certain from their back-and-forth was available and interested.  She spent another ten minutes psyching herself up to write her number on his bill, then lost her nerve.

And then there was Sam.  He’d come in for lunch many times since that first visit, when Katrina had demonstrated exactly how to hook a customer.  When Katrina wasn’t working Sabrina even got to wait on him.  They made small talk, but there was no real flirting.  Sabrina wasn’t sure why, whether due to the fact that he and her sister were an item, or the fact that she lacked the nerve.

Now, though, still reeling from one of the most exciting and intense orgasms she’d ever given herself, Sabrina began to feel something akin to nerve for the first time in a very long while.  Her heartbeat was still racing, fragrant moisture clinging to her thighs and pooling beneath her ass.  She even fancied that her body was glowing.  She felt, in a word, sexy, and though completely satisfied physically, she was still brimming with sexual desire.  Time now to do something about it.

She heard Katrina’s feet sound against the bedroom floor.  When the door opened, Sabrina hurried to her own door and looked through the keyhole.  She watched her sister walk down the hall to the bathroom, her naked body lean, bathed in sweat.  After Katrina had disappeared into the bathroom, Sabrina heard the sounds of the shower running.  She had precious little time.

She peeked out of her bedroom.  The hall was empty, so she dashed to Katrina’s bedroom door and opened it slowly.  Sam lay asleep in bed.  She beheld his nakedness for the first time, savoring every inch of him.  He was even more perfect, more glorious, than Sabrina could have imagined.  As she approached the bed, his eyes opened.  Her heart leapt.

“Hey beautiful,” he said with a sexy smirk.

Sabrina’s mind raced.  She didn’t know how to reply – what might Katrina say in response? – so she said nothing, and instead climbed silently onto the bed in front of him.  She moved herself onto her hands and knees, and then reached back to open herself up for him.  She paused a moment, her still-wet sex open, ready for him.  She finally spoke:  “Fuck me.”

No sooner had the words escaped her mouth than Sabrina felt Sam’s prodigious member throb against her opening.  All at once, he buried himself inside her.  She gasped, the realization of what was happening striking her with great resonance as he filled her like she had never been filled before.  Sam’s strong hands gripped her hips, his cock meeting her G-spot with each forward thrust.  Sabrina didn’t even have time to raise a hand to her clit and prod herself toward climax.  No sooner had she even thought about it than she was convulsing through an orgasm so explosive that it dwarfed her previous one.

Her moans were urgent and erotic.  She didn’t bother holding back.  Even had she wanted to, there was no way she could.  But she didn’t want to hold back.  She’d been dreaming of this, desiring it for so long.  Everytime Sam walked into the café, everytime he spent the night with Katrina, everytime Sabrina overheard the sounds of their passion, she wanted him.  And now she had him.

Sam’s hands tightened around Sabrina’s hips, his breathing escalating as his cock swelled inside of her.  She almost climaxed again at the very thought of his release.  His voice was a throaty whisper:  “I’m cumming”.  He repeated it with greater emphasis, his words becoming groans of pleasure.  Sabrina hopped off of him, spun around, and opened her mouth invitingly.  Sam took the hint.

After she’d swallowed the last drop, and licked and sucked him clean, Sabrina looked up at him.  He was completely spent, his shoulders sagging, his body deflated but still sexy.  He smiled as their eyes locked, and then he spoke.

“That was great.  Now you’d better get out of here before Katrina finishes her shower.”