Home Alone with My Stepbrother

Let me be clear: Alex is my stepbrother. We met when I was 15 and he was 17, when my mom married his dad. For three years, we'd been polite, friendly, and completely, desperately aware of each other in ways we never talked about. Now I was 18, he was 20, and our parents were spending the weekend at a bed and breakfast three hours away.

The first night was normal. We ordered pizza. Watched a horror movie. Argued about toppings. But there was this tension humming under every interaction — the way his eyes lingered when I stretched on the couch, the way my stomach flipped when his arm brushed mine.

Saturday night, everything changed.

We were watching another movie, some forgettable action flick, and I had my feet in his lap because I was cold and he offered. His hand rested on my ankle. Then my calf. Then, so slowly I almost didn't notice, his fingers were tracing patterns on my thigh.

"Alex," I said quietly.

He froze. "Sorry. I—"

"Don't stop."

The words hung in the air. He turned to look at me, his expression unreadable. "Maddy, if we do this..."

"I know what we are," I said. "I also know we're not actually related. And I know I've thought about this for three years."

Something broke in him. In both of us. He pulled me into his lap in one motion, his mouth crashing into mine. The kiss was hungry, years of wanting compressed into a single moment. His hands were everywhere — my hair, my back, sliding under my oversized hoodie to grip my waist.

"You have no idea how many times I've imagined this," he growled against my neck.

"I think I do." I ground my hips down into his lap and felt how hard he was. "I think I know exactly."

He pulled my hoodie off, then my t-shirt. I wasn't wearing a bra. His eyes went dark. "Jesus, Maddy."

I pushed him back against the couch cushions and kissed down his chest, pulling his shirt off. His body was lean from his summer construction job, muscles defined in the dim TV light. I unbuckled his jeans and pulled them off, then his boxers. His cock was beautiful — thick, long, curving slightly upward.

"Like what you see?" he asked, and I could hear the smirk in his voice.

"Shut up." I wrapped my hand around him and stroked slowly, watching his head fall back, his jaw clench.

"Come here." He pulled me up until I was straddling him, my leggings the only thing between us. He peeled them off, then my panties, and I was completely bare in his lap. His hands gripped my ass, squeezing, kneading. "So fucking perfect."

I reached between us and positioned him at my entrance. We both held our breath. Then I sank down, taking him inch by inch, and both of us moaned.

"Oh fuck," he breathed. "You're so tight."

I started to move — slow at first, finding our rhythm. His hands guided my hips. His mouth found my nipples. I rode him on our parents' couch, the movie still playing in the background, neither of us caring about anything but this moment.

"Harder," I begged, and he thrust up into me, meeting my movements, driving deeper. The sound of our bodies slapping together filled the room. I was close — so close — and he must have felt it because his thumb found my clit and pressed down.

I shattered. My orgasm ripped through me, and I screamed his name, my nails raking down his chest. He followed right after, spilling inside me with a groan that was almost a growl.

For a long moment we just breathed, tangled together on the couch.

"That was..." I started.

"Yeah." He kissed my forehead. "It was."

We did it again in his bed that night. And the next morning in the shower. And one more time on the kitchen counter before our parents got home.

We never told them. But every time we made eye contact at family dinners after that, we both smiled. And we definitely found reasons to be "home alone" together as often as possible.

Step-siblings. Neither of us regretted a thing.