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Back Seat Baby

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My step-brother and I have hated each other since we met, so it’s a nightmare being forced to share one seat in the back of Dad’s truck, jam-packed with moving boxes, for the next two days until we get to our new house in Arizona. Tired of my squirming and complaining, Samir pulls me onto his lap for the remainder of the drive, and I find out just how nice my step-brother can be…

Back Seat Baby is a spicy, 12k-word romance novelette. All characters are 18+. Please read the Author’s Note included at the beginning of the book. Happily ever after guaranteed.

47 pages, Kindle Edition

Published May 2, 2024

277 people are currently reading
2109 people want to read

About the author

May Alder

18 books524 followers
May Alder would like to thank her life-long maladaptive daydreaming disorder and rampant #daddyissues for the storylines that have been brewing in her mind for years. Her need to turn them into something productive, a positive instead of a negative, has spurred her to write her stories and release them into the world.

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5 stars
782 (28%)
4 stars
856 (30%)
3 stars
777 (27%)
2 stars
275 (9%)
1 star
102 (3%)
Displaying 1 - 30 of 223 reviews
Profile Image for thebeespot72.
1,778 reviews187 followers
May 5, 2024
A sneaky new release from May Alder, “Back Seat Baby,” is a step-siblings romance. It’s a quick one, but like the other May Alder books I’ve read, they are surprisingly not just super hot but well-developed. I’ve read many short, insta-lust, smutty stories, and I have to say that May Alder’s writing is top-tier for these types of books. “Back Seat Baby” is what it is. The step-siblings have a forbidden relationship and do their thing in the back seat, vacationing with their family. The step-bro has a “breading” —that thing that shall not be named—and the result is, well, see the title.
Profile Image for Cyn.
363 reviews30 followers
July 4, 2024
First book by May alder. Heck yeah this was hot. And it had a good little storyline also. Sneaky stepbrother. Dirty mouth. Love that he doesn't stop when busted.
Profile Image for Jen ♥.
1,776 reviews1,024 followers
Read
June 9, 2024
Step-siblings and he's the V-card holder 🤭
Profile Image for Ainhoa.
595 reviews17 followers
Read
October 3, 2024
The level of planning this boy had to do, I’m actually impressed 🤡
Profile Image for Anni.
167 reviews
May 23, 2024
If you saw this... no you didn't. 😏
December 9, 2025
So, uhm, that is, I...

*Blasts 90s rock music*

I'm going to hell for thinking this was hot. Also virgin hero 🔥



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🕮⋆˚࿔✎𓂃 𝐣𝐨𝐢𝐧 𝐦𝐲 𝐜𝐨𝐦𝐦𝐮𝐧𝐢𝐭𝐲 𝐟𝐨𝐫 𝐦𝐨𝐫𝐞 𝐫𝐞𝐯𝐢𝐞𝐰𝐬
━━━━━━━━━━━━━━━━━━━━━━━
Profile Image for Kelsey H.
266 reviews29 followers
November 23, 2025
FMC – Becca: 3⭐
MMC – Samir: 3 ⭐
SPICE: 🌶️🌶️🌶️🌶️

LIKES:
The instant tension — the story jumps immediately into forbidden, messy, oh-no-this-is-wrong-but-it’s-hot energy, and honestly? It works for the trope

The forced proximity + road trip setup — simple, chaotic, and effective

The heat factor — this novella knew exactly what audience it was writing for and did not hold back

DISLIKES:
Samir's obsession with breeding her was… a lot. Not bad, just dialed to 300% when 150% would’ve still gotten the point across lol

Their years of mutual secrecy felt unnecessary — this honestly would’ve hit harder as a “final fling before college” or a “we both snapped during a quiet car ride” moment

The dad not realizing what was happening in the backseat? Absolutely wild. Sir, how do you parent with that level of obliviousness??
Profile Image for Eunoia.
207 reviews57 followers
May 10, 2024
ouuu virgin hero 🥰
Profile Image for Sarah.
504 reviews11 followers
March 2, 2025
3.25 stars

LOL…Freaky ass book 😭
Profile Image for kit.
104 reviews5 followers
April 30, 2025
love how he was a virgin
Profile Image for Jess • bestiebookshelf_.
711 reviews57 followers
November 20, 2025
Don’t judge me, fuckers. Reading goal needs to be met and it’ll be done by reading these short, filthy novella. Ok. Cool.
Profile Image for Intel Chicky Reads Romance (Kara Merideth).
2,291 reviews1,538 followers
May 28, 2024
Loved it!

Story: ⭐⭐⭐⭐⭐
Trope: taboo step-brother
Angst: 😱😱😱
Smexy: 🔥🔥🔥🔥

Super hot and naughty little novella. Absolutely loving May's books. I just found them and are tearing through them, lol. Obviously, A book that's 67 pages long can only be so deep, but it still manages to hit the spot.
Profile Image for Brittany (Brit.tea.reads).
1,498 reviews450 followers
May 29, 2024
When hate turns to love between step-siblings, all in the backseat of a Tahoe on a road trip with the dad driving. Lol 😂

“𝐉𝐮𝐬𝐭 𝐥𝐢𝐤𝐞 𝐭𝐡𝐚𝐭. 𝐒𝐮𝐜𝐡 𝐚 𝐠𝐨𝐨𝐝 𝐠𝐢𝐫𝐥. 𝐅—𝐤𝐢𝐧𝐠 𝐫𝐢𝐝𝐞 𝐦𝐲 🍆, 𝐌𝐚𝐦𝐚. 𝐌𝐚𝐤𝐞 𝐦𝐞 💦 𝐬𝐨 𝐈 𝐜𝐚𝐧 𝐟𝐢𝐥𝐥 𝐲𝐨𝐮𝐫 😻𝐭𝐨 𝐭𝐡𝐞 𝐛𝐫𝐢𝐦. 𝐈 𝐜𝐚𝐧’𝐭 𝐰𝐚𝐢𝐭 𝐭𝐨 𝐰𝐚𝐭𝐜𝐡 𝐦𝐲 𝐛𝐚𝐛𝐲 𝐠𝐫𝐨𝐰 𝐢𝐧𝐬𝐢𝐝𝐞 𝐲𝐨𝐮𝐫 𝐛𝐞𝐥𝐥𝐲.”

When he called her mama 😂


A good read and I’ll be reading more of her books.
Profile Image for Hannah Boyd.
769 reviews27 followers
May 8, 2024
4.5/5 ⭐️

Super cute and hot. Wish showed how the parents reacted to discovering them besides them just accidentally walking into them having sex lmao but otherwise I loved it

Steam-3/3 breeding kink w/preg, virgin MMC
This entire review has been hidden because of spoilers.
Profile Image for SJ.
2,021 reviews33 followers
August 13, 2024
More smutty goodness from this MF writer with a step-sibling novella. The cramped back seat in a three seat SUV filled to the brim with moving boxes is where most of the action occurs. Antagonist stepbrother and stepsister have to sit together on a cross country family move. The h finds it impossible to get comfortable with her tall, muscled, lacrosse playing stepbrother taking up most of the room.

Things start heating up as H pulls her onto his lap and massages her to get the cramps out. She is shocked by the kindness and does not pull away. Things escalate when leggings and gray sweatpants are pulled down. Ahh, gray sweatpants on a hung man.

Of course I kept reading this smut fest.
The writing was good and the story had a lot of heart. The siblings have personalities and are well written. This is a dual POV novella and it turns out that stepbro has loved stepsis since meeting her as a teenager. She likes him a lot, too, under the antagonism.

He is following her to college and has quite the plan for them to be together. Step 1: Get her pregnant.
OTT plot point, but h after some initial resistance is on board because monster cock has made her lose her mind! No, she actually wants it and he has a business minded head with the plans and money for them to get married and live together. Their parents are periphery characters, but were written very nicely and likable.

This was a nice read.
Profile Image for Mel (whilemelwasreading).
1,333 reviews121 followers
November 26, 2024
"You're mine, Becca. You'll always be mine, especially when I turn you into a mama."

I read a few of these author's novella's and this was probably my fave of those I read. But I still wouldn't shout it from the rooftops, ya know?

Two step siblings forced to share a cramped back seat when their parents fill their cars to the max to move to a new state. And let's just say, things spring up when hidden in such tight quarters.

It was fun. Entertaining. The mindless read I was looking for. You have to just go with it. I'm all for that sneaking around taboo lust and tension. I struggled with how much older they seemed than their ages though. It was weird for me to read a breeding kink in teenagers off to college. And it ends abruptly too. But an entertaining palate cleanser overall.

What You'll Find:
-Erotic Short Novella
-Step Siblings
-Off To College
-Forced Proximity (His lap)
-Semi-public spicy times
-Virgin Hero
-Breeding Kink
Profile Image for Kay - kayreads_romance .
381 reviews35 followers
April 20, 2025
omg

Okay wait I loved this hahahhaah
Yep! 47 pages of spice basically
Semi public, step siblings, breeding
If you like any of those tropes, you’ll like this!
Profile Image for Becca Francis.
47 reviews4 followers
August 26, 2025
If you know me in real life, you’re not allowed to judge me on this one.
Was there a plot? No. Did I need a plot? Absolutely not.
Profile Image for BelleLovesRomance.
349 reviews333 followers
April 10, 2025
⭐️ 5/5 🌶 5/5

Stepbrother and stepsister have sneaky sex on the back seat of a car during long trips? 🥵💦🤰🏻

Shut up and take my money!!! 💸💸💸

🚗 MF contemporary romance
🚗 Taboo (stepbrother and stepsister)
🚗 Virgin MMC
🚗 Enemies-to-lovers
🚗 Semi-public sex (back seat of a car)🔥
🚗 Breeding kink (with pregnancy)
🚗 Anal sex
🚗 Low-angst, sweet, hot AF
🚗 HEA
🚗 Epilogue
Profile Image for Mallory.
57 reviews1 follower
September 14, 2025
I saw this recommended on Reddit and figured less than an hour to read, why not? I’m curious.

100% taboo smut. If that’s what you’re looking for, go for it.

And the way my jaw dropped at the ending when the parents came home early. W. T. F. I didn’t know if it should laugh or cry. Stop it right now lmao.
Profile Image for Catheryn.
1,369 reviews28 followers
May 15, 2024
This was a fun spicy story.

I thought it was pretty sweet, especially since they both have been hiding feelings for each other. I thought it would be little more OTT, but this was a refreshing sweet story. The ending though was very spicy.
Profile Image for M's ☆~HEA~☆.
1,374 reviews59 followers
September 14, 2025
“You’re full of everything, aren’t you, Mama?” I ask with a satisfied smirk. “Belly full of my baby. Pussy full of my cum.” ....“And ass full of my dick. Such a good girl taking all of me.”
I want two things. 1. My own Samir 2. A full novel of Samir. He is filthy dirty yet supportive, sweet, and sexy. *grabby hands*
Displaying 1 - 30 of 223 reviews

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