The One Rule She Gave Me Was to Never Tell Her Brother.

My name is Noah Grant. Thirty. Marketing director at a Chicago agency. Six-foot, still hit the gym, still run the 5K under 20 minutes. Alumni weekend at Michigan brought me back to Ann Arbor—football tailgates, old bars, nostalgia I didn’t ask for.

My old dorm on the Hill was still standing. Same brick walls, same narrow halls. I wandered in alone late Saturday night. Campus quiet except distant cheers from the stadium. Door to my old room—304—was unlocked. Empty. Someone’s parents probably forgot to lock it after move-out.

I stepped inside. Same layout: twin beds, desk, window overlooking the quad. Smelled like old wood and faint weed. Memories hit hard—late-night study sessions, beer pong, my roommate Derek Hayes laughing till 3 a.m.

Then the door opened behind me.

Mia Hayes. Twenty-five. Derek’s little sister. I hadn’t seen her since she was a high school kid visiting campus. Now—damn. Long blonde hair, blue eyes, body that filled out a tight alumni hoodie and jeans perfectly—curves, long legs, breasts pressing against the fabric. She smiled slow.

“Noah. Thought I heard someone.”

“Didn’t know you were here.”

“Visiting Derek. He’s at the game.” She stepped in. Closed the door. Locked it.

Silence stretched. She looked around. “This was your room?”

“Yeah. Derek’s too.”

She walked closer. “He still talks about you. Says you were the bad influence.”

I laughed. “He was the bad influence.”

She bit her lip. “I always thought you were hot.”

Pulse kicked up. “Careful, Mia.”

She stepped right up. Hands on my chest. “I’m not a kid anymore.”

No more words. I grabbed her waist. Kissed her hard—tongue claiming, teeth nipping. She moaned into my mouth. Hands under my shirt, nails raking my back.

Clothes came off fast. Hoodie, jeans, bra—gone. Naked in seconds. Her skin warm, smooth. Breasts full, nipples hard. I pushed her onto the bed—same creaky frame Derek and I used to jump on.

Mouth between her legs first. Tongue on her clit—flat, circling, flicking. Two fingers inside, curling. She tasted sweet, needy. Hips bucked. Hands in my hair. She came fast—shuddering, moaning low, thighs clamping my head.

I stood. Dropped my pants. Cock hard, thick, ready. She reached for me. Guided me in—slow, deep. Tight heat swallowed me. She gasped.

Missionary on the narrow bed—deep, steady thrusts. Legs wrapped around me. Breasts bounced. Nails dug into my shoulders. Old mattress creaked loud.

“Harder,” she whispered. “Fuck me like you wanted to back then.”

I did. Relentless. Hand over her mouth to muffle moans. Other hand on her hip, pulling her onto me.

She came again—shaking, clenching, soaking me. I flipped her onto her stomach. Took her from behind—hands on hips, pulling her back. Ass bouncing. Hair fisted. Bedframe banged the wall.

“Cum inside me,” she gasped. “Fill me.”

Buried deep. Exploded—thick ropes flooding her while she trembled beneath me.

We collapsed. Breathing ragged. Sweat slick. Bodies tangled on the same bed her brother once slept in.

Morning came. We dressed quick. She kissed me at the door—soft, secret.

“Don’t tell Derek,” she whispered.

I grinned. “Our secret.”

She left first. I waited five minutes.

Walked out to tailgate like nothing happened.

Some reunions are for catching up.

Some are for catching fire.