I 19f and my (f)riend accidentally fucked lil brother (18) last night

I still can't believe this actually happened. Like, I keep waking up and thinking it was some fucked up dream but then I remember the way Alex looked at me this morning over breakfast and I know it was real.

So my best friend Erin and I have been close since we were like 12. She's basically a sister to me. We tell each other everything. And I mean everything. We've shared clothes, shared secrets, even shared guys before in a threesome once when we were both 18 and stupid.

But sharing my little brother? That was never on the bingo card.

Alex just turned 18 last week. He's always been the annoying little brother in my head. You know, the one who used to steal my phone and hide my makeup. But something changed this year. He started working out. Got taller. His voice dropped. And suddenly he wasn't this little kid anymore. He had this jawline that made me look twice and these arms that filled out his shirts in a way that made me uncomfortable.

I never admitted it to myself. But I noticed.

Erin definitely noticed. She'd come over and suddenly she was wearing shorter shorts. Laughing louder at his jokes. Touching his arm when she talked to him. I saw it. I just pretended I didn't.

Saturday night was my parents' anniversary. They went out for dinner and drinks and told us they wouldn't be back until late. Alex was home. Erin was over. We were all just hanging out in the living room watching some horror movie that wasn't even scary.

We'd been drinking. Not gonna lie. My parents have this cabinet full of wine and whiskey and we definitely raided it. Erin and I were on our third glass of wine and Alex was nursing a beer even though he's technically not supposed to drink yet. Whatever. It was a party.

The movie ended and we were just sitting there. Bored. Kinda tipsy. Erin kept looking at Alex and I kept looking at Erin and I knew exactly what she was thinking because I was thinking it too.

"Is it just me or is it hot in here?" Erin asked. She was wearing this tiny tank top and I could see her nipples through it. She wasn't wearing a bra. Of course she wasn't.

"It's not that hot," Alex said. But he was staring at her chest. I saw him.

"Maybe I should take this off," Erin teased. She pulled the strap down her shoulder. "Or maybe I should just go change into something more comfortable."

"You could just take it off," I heard myself say. The wine was talking. But also I was curious. I wanted to see what Alex would do.

Erin looked at me. Raised an eyebrow. Then she pulled her tank top over her head. Just like that. No bra underneath. Her tits were perfect. Perky with pink nipples that were already hard.

Alex's mouth dropped open. "What the fuck, Erin?"

"What?" She acted innocent. "It's hot."

I laughed. Then I pulled my own shirt off. I was wearing a lace bralette that barely covered anything. "Now we're even," I said.

Alex was frozen. His eyes were darting between us. I could see the bulge in his sweatpants growing. Hard to miss honestly.

"You're both fucking crazy," he said. But he didn't look away.

Erin walked over to him. Slow. Hips swaying. She stood right in front of him and looked down at his lap. "Is that for me?" she asked. "Or for her?"

He didn't answer. Couldn't.

She dropped to her knees in front of him. Her hands went to the waistband of his sweatpants. "I'm gonna take these off now," she said. "And you're gonna let me."

He nodded. His voice was gone.

I watched my best friend pull my little brother's sweatpants down. Watched his cock spring out. And fuck. It was huge. I'd never seen it before. Never even thought about it. But there it was. Thick. Long. Veiny. The tip was already wet with precum.

Erin didn't waste time. She leaned forward and took him in her mouth. All the way. Her head bobbed up and down and Alex groaned so loud I thought the neighbors would hear.

"Oh my god," he breathed. "Erin. Fuck."

"Don't cum yet," she told him. Pulling off. "I want your sister to have some."

My sister. She called me his sister. And for some reason that made it so much hotter.

I walked over. Dropped to my knees next to Erin. We both looked at his cock. Then we looked at each other. And we kissed.

Right over his dick. Our tongues touching. His precum on both our lips. We both licked it off each other. Tasted him together.

"Both of you," Alex whispered. "Oh my god. Both of you."

I took him in my mouth first. Swirled my tongue around the tip. Tasted the saltiness. The musk. He was so hard I could feel him throbbing on my tongue.

Then Erin pushed me aside and took him deeper. Down her throat. She gagged a little but she kept going. Tears ran down her face. She didn't stop.

"Fuck, I'm gonna cum if you keep doing that," Alex warned.

Erin pulled off. Smiled up at him. "Then we'll do something else."

We both stood up. Erin grabbed my hand and led me to the couch. She pushed me down onto the cushions. Pulled my shorts off. My panties too. I was dripping wet. Soaking the fabric.

"She's so wet," Erin told Alex. "Look. Feel."

Alex knelt between my legs. His hand trembled as he touched me. His fingers slid through my wetness and I moaned.

"Fuck," he breathed. "You're so wet."

"Lick me," I begged. "Please Alex. Please."

He did. His face buried between my legs. His tongue found my clit and I screamed. His tongue was so hot. So eager. He was lapping at me like he'd been starving for it.

Erin watched for a minute. Then she climbed onto the couch behind Alex. Wrapped her legs around him. Rubbed her pussy against his back while he ate me out.

"Your tongue," I moaned. "Fuck. Where did you learn to do that?"

"Porn," he admitted. "Lots of porn."

I laughed and then I came. Hard. My whole body convulsed against his mouth. He kept licking through it. Sucking my clit. Drinking every drop.

When I stopped shaking, he pulled back. His face was covered in me. His lips shiny. He looked proud.

"Now Erin," he said. "I want you too."

Erin got on her hands and knees on the floor. Alex got behind her. He slid inside her in one smooth motion. She screamed. He was so thick, so big, she couldn't even talk for a second.

"Fuck me harder," she begged. "Please. Harder."

He did. Pounding into her. His hands gripping her hips. His balls slapping against her clit. She was moaning and crying and loving every second.

I watched them. Touching myself. Getting wetter watching my brother fuck my best friend.

"She's so tight," Alex grunted. "So wet."

"Don't stop," Erin begged. "Don't stop don't stop don't stop."

Then Alex pulled out of her. His cock was glistening with her wetness. "Your turn," he said to me.

I didn't wait. I got on the floor next to Erin. On my hands and knees. Alex got behind me and pushed inside me. He was even bigger than I imagined. So deep. So wide. I felt like he was splitting me open.

"Too big," I gasped. "You're too big."

"You can take it," he said. "I know you can."

He wasn't gentle. He fucked me hard. Fast. His hands on my ass. His fingers digging into my skin. I could hear the wet sounds of him sliding in and out of me.

Erin crawled in front of me. She put her pussy in my face. "Lick me," she demanded. "Lick me while he fucks you."

I did. I buried my face between her legs. Licked her clit. Sucked her lips. She tasted like Alex. Like us. Like everything.

I was getting fucked from behind. Eating out my best friend. My little brother was inside me. And I'd never felt so dirty. So alive. So wet.

Alex's rhythm changed. Faster. Deeper. He was close. I could feel him swelling inside me.

"I'm gonna cum," he warned. "Where do you want it?"

"Inside me," I begged. "Cum inside me. Fill me up."

He groaned. Pounded into me one last time. And then I felt it. Warm. Thick. So much of it. Pumping into me. Filling me. I could feel it dripping out of me already.

"Don't move," I commanded. "Stay inside me."

He stayed. Panting. His forehead against my back. His cum leaking out of me around his cock.

Erin was still rubbing her clit against my tongue. She was so close. I could feel her tensing.

"Fuck," she moaned. "I'm gonna cum."

I sucked her clit harder. Faster. She screamed. Her whole body shook. She came all over my face. I licked her through it. Cleaned her up.

We all collapsed on the floor. Panting. Sweating. Covered in each other.

"Does this make us weird?" Alex finally asked.

"Extremely," Erin said.

"Are we gonna do it again?"

I looked at him. At Erin. At us.

"Probably," I admitted.

He grinned.

We didn't sleep at all that night. We fucked everywhere. The couch. The kitchen floor. My parents' bed. The shower. Erin and I took turns. Sometimes together. Sometimes separate. We made him cum so many times he could barely stand.

When my parents came home Sunday morning, they found us all passed out on the living room floor. Naked under a blanket. They didn't say anything. Just shook their heads and went to their room.

Alex looked at me over breakfast. He gave me this little smile. This knowing smile.

"I love you," he whispered when our parents weren't looking.

"I love you too," I whispered back. "But we can't tell them."

"Obviously."

Erin kicked me under the table. She was smiling too.

And I knew. This wasn't just one time. This was the beginning of something new. Something dirty. Something mine.

I still feel his cum inside me when I walk. A constant reminder of what we did. What we're going to do again. Probably tonight.

I'm already wet thinking about it.

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