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My Best Friend's Sister

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For Jackson Walsh, women are as easily accessible to him as the yellow taxi-cabs outside of his New York penthouse. His days filled with growing his thriving business and his nights with countless women he’d meet while out, Jackson is only accountable for himself. Which is how he liked it. But when Jackson’s best friend asks him to watch over his little sister when she moves to the big city, he’s faced with the challenge of deciding whether the one woman he couldn’t have—the one he should stay away from was actually the woman for him.


She was his best friend’s little sister.
He was supposed to watch out for her, not sleep with her.
Not… fall for her.

108 pages, Kindle Edition

First published December 29, 2017

692 people are currently reading
5918 people want to read

About the author

Q.B. Tyler

25 books6,760 followers
Amazon Top 15 Bestselling author and lover of forbidden romances, tacos, coffee, and wine, Q.B. Tyler gives readers sometimes angsty, sometimes emotional but always deliciously steamy romances featuring sassy heroines and the heroes that worship them. She's best known for writing forbidden (and sometimes taboo) romances, so if that's your thing, you've come to the right place. When she's not writing, you can usually find her on Instagram (definitely procrastinating), shopping or at brunch.


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5 stars
1,687 (20%)
4 stars
2,531 (30%)
3 stars
2,763 (33%)
2 stars
936 (11%)
1 star
262 (3%)
Displaying 1 - 30 of 668 reviews
Profile Image for Jessica .
2,622 reviews16k followers
August 8, 2022
I love how the title of this book tells you exactly what you're going to get- a best friend's sister romance. Ava is living in New York going to law school and her older brother tells his friend Jackson to look after her. Months go by and the two never speak, but when Ava needs help, she calls Jackson. He's annoyed, but he helps her out and picks her up. The two start a bantering relationship until Ava asks Jackson for some lessons in seduction because Ava is crushing on someone in one of her classes. The two have insane chemistry and start a physical relationship. The writing in the beginning was a little awkward, especially the dialogue, but I really loved when Jackson realized he liked Ava and didn't want to let her go. They fell fast, but I loved it! I also love a jealous hero and Jackson delivered on that. Since this is a QB Tyler book, it was super steamy with loves of chemistry. It was a short and fun time!
Profile Image for MG *Bury Me with My Kindle.. & a REALLY Long Charger*.
587 reviews768 followers
June 7, 2020
3.5 stars rounded down

Jackson Walsh is a corporate entrepreneur and general manwhore who does not have the time or inclination to do relationships. He enjoys having women on his arms and in his bed, but he does not stay the night, and he does not keep them any longer than 1 month, if that long. His best friend Tucker Remington is similar when it comes to the "hit it and quit it" mentality; they have been friends since they were young children. So much so, that Jackson feels like Tucker's father is his second dad, so when Tucker and his dad ask Jackson to look out for Tucker's little sister Ava (a girl he has known since she was born but hasn't seen since she was an awkward and gangly pre-teen) while she is studying law at NYU, he agrees.

Ava has always had a crush on her brother's best friend Jackson, but she knows he is unobtainable as he doesn't stay with women for long. When she gets mixed up in the complex subway system late one night and ends up in a place she wouldn't even be safe to frequent during the day, she calls Jackson to cash in the favor of looking out for her. Jackson is annoyed at first, but he agrees to go and get Ava when he learns where she is. Expecting an older version of the scrawny girl with dull brown hair, he is stunned to find one of the most beautiful women he has ever seen. Once he "rescues" her from the situation, they see each other a couple more times for casual drinks, and Ava asks Jackson to help her out with a problem she would like to be rid of.... her v-card.

Will Jackson agree to Ava's request? If he does, will it change his outlook on women? And if Ava's brother finds out, will he ever forgive his playboy friend for defiling his little sister?

This was a cute novella (~100 pages) with more character development than you usually find in shorter stories (a pleasant surprise!) and lots of steamy goodness! The only issue I had with it was that Jackson does a total 180 pretty quickly and even becomes pretty cheesy towards the end of the book, which felt inconsistent with his character (some people like cheesy H's; I like the strong alpha ones with a good heart in the end, but I don't need the mush). Overall, a good read!

Plot --- 3.5/5
Main Characters --- 3.5/5 (Jackson = 3/5 bc of inconsistency; Ava = 4/5
Supporting Cast --- 3.5/5
Steam Level --- 4/5 (erotica)
Violence --- Nothing graphic or of the domestic variety/no triggers
Language --- Some (F-bombs mostly)
POV --- 1st from Jackson's POV
Profile Image for Crystal (Crystalreads2).
970 reviews993 followers
March 3, 2023
Absolutely adore this book. It's unique for a best friend’s sibling trope; The book is written from Jackson's POV. I usually love multiple POVs, but this was brilliant; it made me think outside the box.

Jackson, known as a playboy,always considered Ava like a sister. Until his best friend asks to watch over her; after years apart, he sees how much he is grown up and is instantly smitten with her, but completely off limits.

As much as I adored this book, I wish it was a little more in depth and longer, overall a great spicy read.
Profile Image for Just A Girl With Spirit.
1,403 reviews13.3k followers
July 20, 2020
All the feels!

“She looks up at me, and for a brief second, I’m transported back to a time when Ava used to look up at me with those doe eyes of hers. God, I’ve been hers from the start. How am I just realizing it?”

How am I just now reading about the amazing QB Tyler?! This book is my cat nip. Older brother’s best friend. Virgin little sister that wants her cherry popped by brother’s bff, so that she will be experienced for the one she “thinks” she wants to lose it with. ALL. THE. THINGS.

This book had all the things in it that makes a five star read. I can’t wait to read all of QB’s books!
Profile Image for Nes.
45 reviews40 followers
March 5, 2021
1.5/2 Hearts

This one was disappointing. Everyone who knows me, knows I love a good ol’ brother’s best friends trope, I just can’t resist them, so I was really excited to read this one from Q. B. Tyler. But I just couldn’t like this.

The story starts with Jackson getting a call from Ava, his best friend’s little sister, who is now all grown up. The plot was a bit boring, revolving around Ava asking Jackson to take her virginity, because she wants another guy but doesn’t want to appear inexperienced.

But then, I just couldn’t get excited to see where all of this was going; I didn’t care when there was the drama of the brother finding out, and I certainly didn’t care about that ending, that was so rushed I couldn’t have seen it coming (so unlikely it was).

It had everything to be a really good novella, it just wasn’t.
Profile Image for Anna.
484 reviews372 followers
January 6, 2018
I absolutely love love brothers-best-friend and best-friends brother stories !! I love the angst and butterflies that come with it ! This was a really satisfying novella length book and I’m glad that it was a 4 Star season opener.
Profile Image for Jenny Lovez Bookz.
664 reviews151 followers
August 7, 2022
This was kind of basic and not the best storytelling, but something short & simple to read in between the heavier stuff
Profile Image for Peppa.
1,178 reviews97 followers
July 30, 2025
I’m usually a sucker for the whole brother’s best friend trope, it’s one of those setups that always pulls me in, no matter how many times I’ve read it. So I went into this one with high hopes, but honestly… it just didn’t do it for me.

The story kicks off with Ava, now grown, calling up Jackson, her brother’s best friend, to ask him to take her virginity. Not because she wants him, but because she doesn’t want to be inexperienced with someone else. And yeah, I guess that’s meant to be the spark, but I couldn’t bring myself to care much about it. The setup felt flat and I didn’t feel the chemistry between them at all.

I love the taboo element, but the way it was handled just felt... bland? Even when the brother found out, I wasn’t invested and by the time the ending came around, it was so rushed and far-fetched I was just blinking at the page like, “Wait, that’s it??“

I’ve enjoyed other stories from this author before, but this one just didn’t land. The plot didn’t hook me, I didn’t care for the characters, and even the drama felt like it didn’t know what it wanted to be. Disappointing, especially when it’s a trope I usually love.
Profile Image for Lolina ⋆ .
1,141 reviews241 followers
November 13, 2021
I just loved this book. It was a really fun and sweet story- and I just loved the fast pacing of it all, as it led to a very short and entertaining book.

I would definitely say that it got the job done, and that I had a great time reading it. Ugh, I'm just a sucker for these types of stories.
Profile Image for BookishAnya.
376 reviews461 followers
March 12, 2023
QB never misses for me and this book was no different.The book did start off abit slow for me but once it got going I couldn’t put it down.
Perfect for people looking for a easy and shorter read with a decent amount of plot and smut!
⭐️⭐️⭐️⭐️
🌶🌶🌶
Brother best friend
It’s always been you
Kinda friends with benefits?
V fmc
Rich hero
Profile Image for tane'a.
662 reviews169 followers
August 25, 2022
quick little spicy novella, i had a good time, q.b had me giggling and kicking my feet
Profile Image for Karla Lopez.
340 reviews76 followers
June 11, 2020
⭐️ 4.5/5

I have read other books by this author and I absolutely adore her stories. This book was a fun, steamy, quick read. I feel like the the build up of the story was done just right even though it was short. It didn’t feel rushed or any of that sorts.

I love that it was just in Jackson’s POV because we get to see him go through all the motions. Like when he starts wanting her, needing, and then loving her. Ava’s feelings were already there and I liked seeing it in the hero’s perspective of how he got there.

I love Jackson’s Possessiveness and how protective he is. Also, I love his dirty mouth. It is so hot. The steam was just that, very hot as well.

I like the background story we got, it was just enough for the length of the book. And their ending was sweet and so adorable.
Profile Image for Kelly_Reads_Books.
2,123 reviews190 followers
August 7, 2020
My Best Friend’s Sister was quick read that delved into the conflict of falling for your best friend's sister and the struggle of the bro code. This story was very good!
Profile Image for amanda s..
3,115 reviews95 followers
January 31, 2018
For a debut novel, this baby is soooo good. I enjoyed reading this and I look forward to read more!
Profile Image for Paperback Princess.
1,090 reviews77 followers
June 14, 2020
I really loved this book!!!! Very sexy and totally swoon worthy. The perfect best friend/little sister romance. QB Tyler never fails to bring it!!
Profile Image for Angela  DeMaio.
398 reviews225 followers
February 9, 2023
I was looking for a novella on KU & found this one. talk about STEAM YALL. I enjoyed it though. A nice quick steamy romance.
Profile Image for Mariam,.
674 reviews564 followers
February 14, 2021
Wow. This was cute and cringey, sexy and really cringey. Annoying and sweet.

A lot of conflict that I just... I couldn't wrap my head around.

But Goddamnit, it was amazing to see QB Tyler's writing from the beginning. You can see a lot of her style from her recent works to where she started.
Profile Image for belle ☆ミ (thisbellereadstoo).
2,587 reviews175 followers
December 12, 2021
jackson wasn't expecting his best friend's younger sister, who he hasn't meet for a long while, to be an absolute bombshell. once they reconnected, ava knew that she still harboured feelings for jackson. i've always liked the "best friend's sister"/"brother's best friend" trope so this was a fun and enjoyable one. it had the typical storyline but it was what i wanted so no complains there.
44 reviews
August 16, 2022
OMG!!I really liked this book at first I was like okay I'm going to start reading this book but it's probably not that good but holy shit I lovedd it.This book had everything,it had spice,it had a bit of romance,and the ending omfg it was really cute.
Profile Image for Anna.
893 reviews635 followers
February 12, 2023
3.5 stars rounded down

I love the brothers best friend trope! It does something for meeeee. I think the only bad thing about this book being a novella is that we don’t get to see the build up between the best friend & the sister & that’s my favorite part!!

This was an enjoyable quick read!

Spice: 🌶🌶

Tropes:
best friends sister
Male pov
Virgin heroine
Displaying 1 - 30 of 668 reviews

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