A knock sounded on my bedroom door a little after seven that Saturday evening. Looking up from my phone, I knew it could only be my stepsister, Sabrina. Her mom and my dad had gone out earlier for dinner and a movie.

"Come in," I called, setting my phone aside.

Sabrina stuck her head in the room. "I'm leaving in a few minutes," she told me. "You staying in?"

"Yep." Stretched out on my bed, I knew I probably looked pathetic. "Gotta be up early for work tomorrow."

I had a part-time job at a fast-food restaurant, and I was scheduled to be there before six in the morning. But that wasn't the reason I was staying home tonight.

My stepsister regarded me for a moment, a faint smile on her face. I was surprised when she stepped farther into the room and approached my bed.

Sitting up a little straighter, I forced a smile of my own. "I thought you were heading out."

"I have a few minutes." She flipped her long brown hair over her shoulders. "I can be fashionably late."

Sabrina was wearing shorts that left little to the imagination, along with a white tank top which hugged her ample breasts. But her outfit didn't much matter; she'd be sexy in a burlap sack. 

I knew I wasn't supposed to think of my stepsister that way, and it wasn't like I dwelled on how hot she was. I tried to keep my thoughts brotherly. 

It was hard, though. Hard when Sabrina seemed to be the only person who truly noticed me. She'd been that way since her mom married my dad two years ago.

Now, she slipped off her sandals and climbed onto the bed with me. Quickly, I moved over to make room for her. We both lay on our backs, watching my ceiling fan rotate in endless circles above us.

"So, Ethan." Sabrina turned her head to study my profile. "How's it feel to be graduating from high school in a few weeks?"

"I cannot fucking wait." I could feel my expression darken as I spoke. 

I'd turned eighteen at the beginning of the year, and I was desperate to be finished with school. My grades were average at best, so Dad suggested I attend community college later in the fall. "Buckle down, son, and focus on studying," he'd said. "Then you can transfer to a four-year school."

Sabrina, on the other hand, was twenty and now home from college for the summer. She'd finished up her sophomore year with a 3.8 GPA. Not only was she gorgeous, but she was brilliant as well.

I sneaked a glance at her as she tucked an arm behind her head.

"High school can be shitty," she said.

Though I realized Sabrina was trying to make me feel better, her words did anything but. She'd been one of the most popular girls in her class, and valedictorian on top of that. She had no idea how shitty high school could be.

"Your world will open up once you start college," she went on. 

I scratched at my scruffy beard. "It's community college, Sabrina. I'll still be living at home."

"But you'll meet new people." She nudged my foot with her own. "And they'll be more mature."

I had to snort at that. "Yeah, I'm pretty sure college girls can be vicious, too."

"Hey!" Her comforting manner vanished in an instant. I let out a surprised cry when she gave my arm a smack. "Don't turn into a misogynistic asshole just because you haven't gotten laid yet."

"I'm not!" I protested. "Jesus!"

She raised an eyebrow. "It sure sounds like you are."

I turned away from her before she could see how much the accusation stung. Of course, Sabrina didn't know I'd recently worked up the nerve to ask a girl to senior prom. Someone I considered a friend.

And that girl had turned me down in two seconds flat. After that, she made every effort to avoid me. 

I decided I'd rather be alone than go through that humiliation again.

Sabrina must have realized she struck a nerve, for her touch was gentle on my shoulder. "It's not easy for me, either," she said quietly. "Guys my age can be absolute dicks." When I didn't respond, she scooted a little closer. "That's why I spent most of this past semester fucking one of my professors."

I quickly moved to face her again, my eyes wide. "You didn't!"

She giggled at my astonishment. "I did. He's married, which I know isn't cool, but..." She looked past me, her gaze distant. "I feel like he understands me. I mean, we can actually have a deep conversation. And the last thing I want to do is break up his marriage." Her stare snapped back to me. "I'm sure he's slept with students in the past, so I'm under no illusion that he has feelings for me." She gave a helpless shrug. "It's just a connection we have, I guess."

I frowned at her revelation. While I knew Sabrina had a good head on her shoulders and was mature for her age, I still felt a flash of anger thinking about this professor. What if he ended up hurting her? 

"You could have anyone you want," I finally said. "You don't have to settle for some old married guy."

That made her laugh. "I'm not settling! He's fantastic in bed."

I ran a hand through my dark hair, mussing it even more. I always fidgeted when I was uncomfortable, and the thought of Sabrina fucking her professor definitely made me uncomfortable. Her blue eyes were warm as she watched my reaction. 

"I didn't mean to embarrass you, Ethan."

"You didn't," I rushed to say. "I'm just, uh, surprised, that's all." Looking down, I noticed her hand was mere inches from mine. "I don't think I'm ever going to get enough experience to be good in bed."

"Of course you will," she said. "You just need to have a little confidence."

"How can I do that when I can't even get a girl to go out with me?"

Sabrina turned on her side so she was facing me. She rested her palm on my bare chest. "You sell yourself short. I think you're hot."

"Oh, fuck off!" I said through my laughter. 

"It's true! You have those gorgeous dark eyes, and such perfect lips..." Something in her voice changed then. She sounded breathy, her words almost a moan. 

When I looked over at her, she grabbed my hand and pressed it against her breast. Immediately, I jerked away, as if her skin burned. 

"What are you doing?" Rather than being outraged, I was almost pleading. That brief touch was enough to send the blood rushing to my groin. 

"You want experience? This is how you get it." Again, she brought my hand to her tit. This time, I couldn't force myself to pull away. My fingers gently kneaded that firm mound.

"We can't do this." Already, I was breathing faster. "You're my stepsister."

Sabrina looked down to watch me fondle her. "So? I don't think there's a law against it." A playful smile danced on her lips. "Mmm, feel my nipple getting hard?"

That wasn't the only thing getting hard! With my fingertips, I teased her nipple through her top. "I can't believe you're letting me do this."

"I want you to. It feels nice, having you touch me." Her eyes met mine again. "Can I touch you, Ethan?"

My dick had reached full hardness by this point. "Um, yeah. I'm pretty excited," I admitted sheepishly. 

"I would hope so!" Extending her hand, Sabrina stroked me through my jeans. "Do you like that?"

"So much!" I couldn't resist bucking my hips to thrust against her palm. 

She brought her lips close to my ear. "Want to show me just how hard you are?"

Even though Sabrina wasn't my biological sister, this still felt wrong. Our parents would kill us if they knew. 

But my twinge of guilt didn't cause my erection to weaken. It didn't dull the hot arousal coursing through me. With shaking hands, I took out my cock. It actually pulsed in time with my heartbeat, and the tip was smeared with precum. 

"Oh, that's nice!" Sabrina's gaze grew hungry as she studied me.

"As nice as your professor's?" I whispered.

That made her giggle. "Nicer! Can I touch it?"

Again, my hips gave a thrust, as if to encourage her. "Absolutely."

The moment her fingers circled my cock, I let out a pathetically loud groan. She was gentle, almost teasing, in caressing my length. It had been some time since I'd trimmed my pubes, but if Sabrina minded those coarse curls, she hid it well.

Her tender stroking caused me to produce more precum. She gathered some on the pad of her thumb, which she then licked clean. My eyes widened at the sight of her tasting me.

"That's actually a little sweet," she said. "Wonder if your cum is just as tasty."

"Ah, fuck!" I was sweating profusely, barely able to keep still. I didn't dare ask her to, but I prayed she'd continue jerking me off. 

It was impossible to hide my disappointment when Sabrina released me. My dick continued pulsing, its tip having flushed a fuchsia color. 

Beside me, Sabrina started wriggling out of her shorts. A startled gasp escaped me, and I quickly averted my eyes. When I realized she was also taking off her panties, my fantasies ran wild. Were we going to fuck right now? Was she really going to take my virginity?

My breath snagged in my throat as she moved to straddle me. I offered no resistance to her yanking down my jeans and underwear. 

"This is gonna make us both feel good," my stepsister promised.

I fixed my stare on the ceiling, afraid of being too eager, too pervy. But every cell in my body was aching for this. 

I drew in a sharp breath at the feel of her grasping my dick. She didn't take me inside her. Instead, she pressed my cock against her pussy lips and began slowly rocking back and forth. Her hot, slick flesh glided effortlessly along the underside of my erection. A desperate tremor coursed through me.

"Look at me," she said.

When I did, I noticed the flush in her cheeks. Her eyes were slightly unfocused from her own arousal. 

"How does that feel?" As she spoke, her hips moved a little faster.

I lowered my stare to her smooth pussy. "You're gonna make me come soon," I confessed. My hands clawed at the bedspread beneath me.

Her luscious tits rose and fell with her quickened breaths. "You feel amazing against my clit!" Back and forth, she slid along my dick, coating me in her juice. 

Before I could stop myself, I reached to cup her breasts. My own hips moved while I toyed with her nipples. 

"I'm close," I warned. "Sabrina—"

"Not yet," she said in a stranger's voice. "I'm almost there!"

I gritted my teeth, choking back a growl. My balls were hot and tight, beyond ready to be emptied. It was agony, trying to hold back, but I was desperate for her to orgasm first.

When it happened, it was so subtle that I almost missed it. Her face twisted as if she were in pain, and I felt her quaking beneath my hands. 

"Fuucck," she groaned while riding me at a frantic pace. And then it seemed to become too much, for she abruptly halted above me. Yet her trembling continued. 

I gazed up at her, fascinated. It took several seconds before she recovered enough to flash a grin. 

"Your turn, Ethan."

I lifted my head to get a better view of her cunt pleasuring my dick. All the while, I panted like I'd run five miles nonstop.

Sabrina rolled her hips, and I released a helpless cry just before my body tensed. 

"Please," I begged, as if terrified she would stop. As if she would deprive me of what I most craved.

But she kept going until I came with a shudder. Cum shot forth, landing on my chest in globs and streaks. Sabrina made a triumphant sound, her movements never slowing.

I moaned and whimpered, longing to be drained completely dry. My dick twitched while nestled against my stepsister's pussy. It was filthy, and it still felt wrong, yet I never wanted it to stop.

Only when my tip grew painfully sensitive did I beg for mercy. Sabrina lifted herself off of me, then climbed from the bed. I kept my stare riveted between her thighs, hungry for one last glimpse of her cunt. 

"You're a mess," she teased, nodding toward the cum on my skin. "But now you have experience." 

My dick was still mostly hard, the head sporting a small glob of semen. Sabrina leaned forward and stuck out her tongue. I gasped when she gave me a slow lick.

"Mmm, you are tasty." She winked before straightening up. "And now I really have to go. Hand me my clothes, will you?"

I picked up the shorts and lacy panties and offered them to her. She made a show of studying the undergarment's crotch, her expression regretful.

"These are too wet. I'll need a fresh pair." She started toward the door. 

"Sabrina," I called, propping myself up. 

She turned back, her eyebrows lifted expectantly.

"Thank you," I said. 

Her gaze grew warm, then hot as it drifted from my face to my cock. My pulse began racing when she approached me again.

Tilting my head back, I gave her another pleading look.

"We're not gonna fuck," she said firmly. "Ever. I mean, we're family, and that would be too weird."

"Yeah, of course," I quickly agreed.

"Still, there are other things we can do." She leaned to plant a kiss on my forehead, then my cheeks, and then my chin. Everywhere but my mouth.

"You have more to learn," she said, "and I'm happy to teach you."