Knocked Up by My Best Friend's Brothers

Lucky Lady Reverse Harem #21

by Kai Lesy

One cosmic wardrobe malfunction.
Four people who shouldn't be together.

It's my best friend's wedding and let’s just say my dress isn’t ready for these curves.
It rips at the worst possible moment, and I bolt for the nearest exit.

I’m standing there in nothing but my heels when the door opens.
And guess who I run into.
My best friend’s way too charismatic brother.

I wish I could say I play it cool.
But I’ve had a crush on him—and his brothers—since forever.
He gives me the greatest pleasure of my life.
Then his brothers join the fun.

Their touch burns. Their words consume me.
I crave them—even more than I fear the fallout.

Growing up, they were my protectors. My almost-family.
They chased away every guy who ever looked my way.
Now, after years apart, they’re finally ready to show me how they feel.

This all feels like a dream… but I know better.
Because it’s only a matter of time before the dark secrets about my family come to light...
Jeopardizing everything I hold dear.

But one thing has become abundantly
My best friend’s brothers will burn the world to the ground before anyone harms me....
Or the little miracle growing inside me.


This is a sexy, stand-alone best friend's brothers reverse harem romance filled with humor, danger, and generous amounts of love. It also contains blistering hot MFMM, ménage fun times, in single and multiple partner scenes so HOT they're bound to melt your kindle! HEA guaranteed.

Genres: Romance, Why Choose, Contemporary

350 pages, Kindle Edition

Published March 24, 2025

About the author

International Bestselling Romance Author.
Amazon US Top 30 Author.

Kai Lesy thrives on abundance SO naturally menage and reverse harems with a multiple over-the-top alphas is her jam.

Outside of writing her next masterpiece, Kai loves baking an obnoxious amount of cookies, playing with her French bull dog, Hugo, and writing about herself in the third person - because it feels fancy.

All books FREE on Kindle Unlimited.

Lucky Lady Reverse Harem Series
1. Single Mom's SEALs
2. Tapped Out Single Mom
3. Three Daddies Under the Mistletoe
4. Christmas with my Best Friend's Brothers
5. Cowboy Daddies
6. Christmas with my Three Best Friends
7. Playing Pretend with my Brother's Best Friends
8. SEAL'd with a Kiss
9. Snow and the Seven Protectors
10. Her Royal Treatmen

Her Glow Up Reverse Harem Series
1. Single Mom's Glow Up
2. Single Mom's Sparkle
3. Baby Makes Seven

Over the Top Galactic Protectors SciFi Series
1. Claimed by Brothers
2. Barbarian Daddies
3. Twins for the Barbarians
4. Triplets for the Barbarians

Dirty Daddies Series
1. Savage Protector
2. Quadruple Daddy
3. Protecting the Nanny

Reviews

[Jenni · Rating 4 out of 5]

Knocked Up by My Best Friend's Brothers is an intriguing book in the Lucky Lady Reverse Harem series. All books are standalone's so you don't have to read them in order.

She's got herself involved in a hot spot and is in hiding but it is only a matter of time before they come looking.

For those of you who love hot and sexy men who will take care of the one they love in all ways, and a bit of action along the way, then this series is for you.

Good story and loveable characters, they will do anything to stop those on the wrong side of the law. Sexy and enticing.

[Brittany Weston · Rating 2 out of 5]

So bad.. It really deserves a one star, but I'm being generous. The writing is choppy, and the plot holes are massive. The MFC is a huge idiot. The romance is lacking majorly. There is no build-up to it. The author tells us they went on a date or that they have been having tons of smexy time, but we don't see it. I didn't care about the 4 main characters relationship because it is totally glossed over. And let's be real we are not reading RH for a substandard plot but for the romance which felt like an after thought. This was the second book I read by this author and both fell flat. I will not be wasting my time on a third.

[Val · Rating 1 out of 5]

I didn’t like the MMCs or the FMC. I also didn’t like the fact the MMCs have shared women before. The Plot was boring that I end up skimming half way through.

[Engrossed Reader · Rating 1 out of 5]

Gave up at 71%: life needs to be lived not endured. This book has me literally holding my head in my hands saying WTF, FFS, every 40 seconds or so. Awful, just so bad. I'm hoping that the mafia will come and wipe them all out in the most painful way possible. Only then will justice be served. If that doesn't happen, I can feel a rampage coming.
However it turns out the mafia reps are stereotypes, yapping away like it's their job to explain the plot. And they are obvious AF about who they are and what they are going to do.
Christa's actions show her to be dumb as a box of dumb rocks, so it seems inconceivable that she's this financial maths whiz everyone says she is. All of her decision making is nonsensical. Even if you are on birth control, having sex with 3 guys simultaneously and start to feel nauseous wouldn't you consider pregnancy as an option? Or would you rather ignore the signs, like loss of appetite, dizziness and keep on going into work whilst unwell so you can faint and end up in hospital. Yay, let's ramp up the nonexistent drama.

The marine brothers show no signs of military training. They are for want of a better phrase 'bunch (trio) of useless twats', I, like everyone with access to the internet can Google and network with others to find out information. What information did their 'military contacts' give them? Nada.

Zero stars for this tripe. It is enraging to have read this much and that's on me. Never again.

[Chrys · Rating 5 out of 5]

The mystery of the Christas past and the secrets she was hiding and what they could be immediately piqued my interest and drew me, add in a RH, and I was completely on board with reading this book. Boy, did this book deliver it kept me engaged throughout its entirety and was filled with suspense that kept you guessing. Spice could have been stepped up a notch or two. Overall, it was a wonderful read.

[Laura Smith · Rating 5 out of 5]

This was on one my favourite reads this month and Kai you done it again I loved reading it I enjoyed reading about the characters. The only thing that could have been improved is for the villain to be less predictable of who it is. I would like to say you’ve improved a lot in writing your books I hope to read more from you soon!

I received a free copy of this book via Booksprout and am voluntarily leaving a review.

[Lisa Macdonald · Rating 2 out of 5]

This was a DNF. It was ok but all the spicy parts were completely skipped over. Isn’t that the whole point of these books? The story line was fine but nothing special.

[Jenn · Rating 1 out of 5]

I like a lot of her books, but this story just didn’t do it for me and I DNF at 48%. I just really didn’t like Christa’s character, to the extent that it ruined the story for me :(

[Sandra · Rating 5 out of 5]

Christa has always found her best friend Teagan's three brothers hot! Cassius, River; the twins, and their younger brother Nathan, always chased away any boy who was interested in Christa.

Christa moved away to LA to finish her studies and land a prestigious job at Perry-Sage. But jump ahead a few years and Christa has come back to Portland for her friend's wedding as maid of honour and also look for a new job. Teagan suggests she apply for a position that has become available at her family's business which her brothers now run.

Christa does but she has a major secret, something she has to keep hidden even from her closest friends. The men know that she is withholding something and hope that she will feel comfortable enough to reveal what that is. The brothers as well as sharing the running of the business, share other things and have their sight on Christa, the one they let walk away when they were younger as they knew it was the right thing to do. But now that she is back, they are going to make her theirs, will Christa be open to the idea?

Christa can't believe what the brothers are asking, but she is willing to walk on the wild side and embrace this new relationship. The love they have for each other as friends soon deepens but Christa's past is catching up with her, does she have to flee again, leaving the men behind? Will her friendship with Teagan fall apart if she finds out she has broken her childhood promise to her?

Christa's life is in danger, can she stay and fight her corner, bringing down the family once and for all or is she putting all those she loves in danger, which could lead to them losing their lives? The stress and the turmoil start taking a toll on Christa's health, has she the strength and the determination to fight to the end?

I received a free copy of this book via Booksprout and am voluntarily leaving a review.

[Shawna · Rating 5 out of 5]

Knocked Up by My Best Friend’s Brothers is a scorching contemporary reverse harem romance filled with forbidden passion, undeniable chemistry, and a twist that changes everything.

At her best friend’s wedding, one wardrobe malfunction leads to the most unexpected encounter of her life. Caught in a compromising moment with her best friend’s charismatic brother, she soon finds herself tangled in a web of passion—not just with him, but with all three of his protective, possessive brothers.

They’ve always watched over her, chased away anyone who dared to get too close. But now, after years apart, they’re done holding back. They make it clear—she’s always been theirs, and they’ll do whatever it takes to keep her safe.

When shocking family secrets come to light, threatening to tear their world apart, these three powerful men prove they’ll stop at nothing to protect her and the little life growing inside her.

With heart-racing suspense, steamy encounters, and a love that defies all odds, Knocked Up by My Best Friend’s Brothers is the ultimate guilty pleasure for readers who love protective heroes, high stakes, and a heroine who finally gets everything she’s ever wanted.

I received a free copy of this book via Booksprout and am voluntarily leaving a review.

[lf · Rating 4 out of 5]

She catches more than the bouquet at the wedding

Knocked Up by my Best Friend's Brothers is part of the Lucky Lady Reverse Harems series. This book was a solidly good read. The story is about Christa, a woman who has returned to her hometown for her BFF Teagan's wedding and also after finding out just what her last job was really about and not wanting anything to do with it any longer. She gets reacquainted with Teagan's three older brothers, Cassius, Nathan and River. These three have always had a thing of sorts for Christa but never did anything as she was taboo and also too young. But the three ex-Marines lay their eyes on the beautiful and very much grown up woman again they decide to make a move. They have shared all of their lives and they will be sharing Christa also. But when they start to realize there are secrets she is keeping and dangerous things in her past they are also determined to protect her and do anything they can to help her heal.

[Sondra Olbrias · Rating 4 out of 5]

Christa has returned home to hide and heal from everything that unfolded at her last job. She thought everything was great and was flexing her coding skills. That was until she realized people were actually being hurt and in some cases murdered. Now she returned home to her childhood friends and family. Cassius, Nathan and River have always been half in love with their baby sisters bestfriend. But she was to young and sorta Taboo. Now Christa is fully grown and different from what they remember almost scared even. The brothers find themselves rekindling old feelings and becoming protective of her. They recognize ptsd after what they saw in the marines. They share everything together and loving her was never hard and nothing has changed. Well mostly.

I received a free copy of this book via Booksprout and am voluntarily leaving a review.

[Knight Linda · Rating 5 out of 5]

An over-the-top read filled with edge of your chair suspense and surprises. Christa came home from LA after seven years hoping to hide from the Mancini crime family but trouble soon followed. She was a highly intelligent cyber tech with a honest mind, so when the Mancinis killed her boyfriend in front of her. She went to work on getting even. In Portland she connected with the Hawthorne brothers that always had a crush on her that had developed to something more. They shared everything including their women and that was fine with Christa as she had always cared for them. She refused to tell them why she had returned home to keep them safe, even when she went to work for their company. A real page turner that will keep you up late to see what happens.

I received a free copy of this book via Booksprout and am voluntarily leaving a review.

[Vickie Lynn · Rating 5 out of 5]

This is another great book by Kai Lesy. You really cannot go wrong with any of her books. Happiness, sadness, uncertainty and feeling like she isn't good enough with her past looming over her.

Christa is best friends with Teagan Hawthorne. River is one of Teagan's twin brothers and the other twin is named Cassius. Nathan is the youngest brother, she is attracted to all of them. She promised Teagan that her brother's were off limits and she broke the girl code.

What happens when her past comes calling? Will Christa tell the guys about the baby? Does she run away again? Do the guys give chase or just let her go again? How do the guys feel about the surprise baby? What happens when Teagan finds out that they are all together? Do they guys want a real relationship with Christa? How does she feel about them? Let's finish reading to find out!

[Samina Rajiwate · Rating 5 out of 5]

An amazing reverse harem story. Christa returns to Portland after many years for her best friends wedding. Seeing her best friends brothers for tge first time after so long has her crush on them reappearing. But she cant have them as she has promised her friend she would never fall for them. But Cassius, River and Nathan Hawthorne have a different plan. They have always loved Christa, but circumstances got in their way. There is no way they would let her go now. But Christa is hiding a very big secret and now her life is in danger. Will tge Hawthorne boys be able to help keep Christa safe? Loved reading their story. Thanx.

I received a free copy of this book via Booksprout and am voluntarily leaving a review.

[Jennifer D · Rating 5 out of 5]

Ok so this one from Kai was a magnificent romantic suspense!!!! I don’t even want to put more plot details out there than what she did in her own blurb so I don’t inadvertently spoil it for anyone…. But…wow!!!!!!

I will also say, it is NOT as spicy as most of the other ploy-romances she has done that I have read……. Regardless I still loved it and gave it five stars…. Just if you were looking for less suspense and TONS of spicy scenes it’s not in this one, try another of hers…if you want an AWESOME story with lots of plot, suspense, twists, and love of course (with a few spicy scenes) then this book will thrill you!.

I received a free copy of this book via Booksprout and am voluntarily leaving a review.

[Mert Welch · Rating 5 out of 5]

Knocked Up by my Best Friend's Brothers: (Lucky Lady Reverse Harems)

What an awesome read. I was hooked from the beginning of the book, not wanting to put my reader down and sleep. I have had some tired days. I have always loved reverse harem stories, so sexy and loving and the wonderful happenings that occur. What sexy adventures and frightening experiences Christa went through, what heroes she had at her side backing her along with her life time friend their sister. Keeping her safe and saving her at an ambush, thank goodness the men were ex military.
I don't want to keep exposing parts of the story for those of you reading this review, so read it for yourselves.

[Cynkris · Rating 4 out of 5]

Christa, River, Nathan and Cassius. What a ride! This book had so much more to it than a steamy reverse harem vibe. There is a lot of suspense and drama. For the most part I loved it. There was just one part I rolled my eyes and thought "oh come on". Overall the main characters are very likeable...though again there were a couple of times I felt real frustration with Christa but that isn't a big deal to me since it made her seem real. The same with the men. The HEA was well earned. Some of it was predictable but not so much that it detracted from the story. I have to say Kai Lesy is becoming one of my favorite authors and I look forward to her next book!

[Jo Weston · Rating 4 out of 5]

Something a bit different from just the MFC keeping what is happening with her BFFs brothers. Something mysterious is going on with the MFC and how she has ended back up in her home town. Its kept under wraps for quite a while whilst the 3 brothers work on convincing the MFC that what they have is worth keeping it a secret. But as we all know secrets come out in the end, throw in an unexpected pregnancy and a crime family out for revenge and you have a great book that will keep you enthralled whilst also raising the tempurature to super spicy.

I received a free copy of this book via Booksprout and am voluntarily leaving a review.

[Lisa · Rating 5 out of 5]

Fantastic story. Christa grew up with Teagan her best friend and had a crush on her three older brothers, River, Cassius, and Nathan. After leaving Portland to go to Cal-tech, she comes back for Teagan's wedding. Seeing the brothers again and the way they are looking at her seems they want her and it is steamy. But her past has followed her from California to Portland and she can't let the Hawthorne family get hurt. The guys know something is wrong and won't let her deal with it alone. This is a book definitely worth your time.

I received a free copy of this book via Booksprout and am voluntarily leaving a review.

[Jenny Harris · Rating 4 out of 5]

I received this book with the understanding that I could leave a voluntary and honest review.

In this book we meet Christa Campbell, River, Cassius, & Nathan Hawthorne. While attending her best friends wedding she runs into her best friend's brothers. When she goes for a job interview she finds more than she bargained for. River, Cassius, & Nathan have been attracted to Christa for years now. They all know though when they originally met her she was to young though. Can they all find a HEA or will there always be something keeping them apart?

Another amazing story by this author. I would highly recommend it to anyone.

[Fiona · Rating 5 out of 5]

I really enjoyed this book, I thought it started off as just being a forbidden between Christa and her best friends, brothers, Cassius, River and Nathan Hawthorne but it soon turned into a intriguing mystery, dangerous sexy drama, full of twist and turns that kept me hanging on to the edge of my seat while trying to work out what was going to happen next. The good news is, there was a happy ending for all involved.

I received a free copy of this book via Booksprout and am voluntarily leaving a review.

[Michelle Odwin · Rating 5 out of 5]

Christa comes back home after leaving her job and life. Her best friend suggests that she work for the family's company that her three brothers run. River, Cassius, and Nathan have all felt something for Christa and decide to go for it. They didn't know the reason Christa came back home, but soon found out. The ups and downs in this story from the best friend/sister finding out, to Christa needing to be rescued from the mafia will have you not putting this down till the very end. Great story.

I received a free copy of this book via Booksprout and am voluntarily leaving a review.

[Jacqueline · Rating 4 out of 5]

Christa has returned home for the BFF's wedding and to also hide from her past. The Hawthorne brothers, who have always protected their little sisters friend, give her a job but also find that she is now old enough for them to act on their desires. When Christa's past catches up with her and secrets and enemies revealed the brothers are forced to revisit their military past. This is a steamy friends to lovers, RH romance with lots of steam, action and plot twists.

I received a free copy of this book via Booksprout and am voluntarily leaving a review.

[Alison McGarry · Rating 5 out of 5]

Falling for your best friend's brothers was not on the agenda when returning for her best friend's wedding. Especially when your best friend made you promise not to go there with them. But the brothers have been waiting for her to return; they knew they saw something in her and now is their chance to make it happen. The road is always bumpy when you keep a secret from your best friend and then add the mafia on her tail. She's going to need help.

I received a free copy of this book via Booksprout and am voluntarily leaving a review.

[Linda Elliott · Rating 3 out of 5]

This was a really good and interesting read Just needs a little editing

I found this book had many twists and turns in it. I enjoyed the characters and the whole concept was a little new to me but didn't Offend me. You can't help but like the main character of the story and the other characters that surround her. Just about the time you think you'd have it figured out there would became a little twist or turn in the story which kept me reading to the very end. I did enjoy this book immensely.

[Sara Munoz · Rating 5 out of 5]

This book 20 in The Lucky Lady Reverse Harems Book Series has an intriguing story with three of her Best Friend's Brother/forbidden Romance and their kidnapped young woman. The characters have intertwined histories, unique personalities and believable interactions. This has a good Reverse Harem Romance Story, a dress malfunction at a wedding, left in heals and nothing else, twists, turns, chemistry, secrets, surprise pregnancy and love. They will have to work it out and with love they will achieve their HEA.

[Charlotte · Rating 5 out of 5]

Christa (FMC) is back in her hometown after years away to be a bridesmaid at her best friends Teagan's wedding. Only for her to come back into the lives of Teagan's brothers - River, Cassius and Nathan. Making old attractions and feelings to resurface for all of them. Christa has had a lot of baggage from her time away and it threatens to collide with her life now. All of which certainly kept me on my toes reading it. The twists and turns made for a great read. The steamy scenarios added to that too. A cracking read.

[Carylle]

This story has it all

This story tells of a young woman and three men that loved her when she was younger and all three are happy that she came home only she is hiding from the mob that she brought down and the company that she worked for , for killing she friend.Only thing 's did not help when the mind family came after her and tried to kill her and her guys.I would like to say thank you for all your hard work and may fortune smile 😃on you always 😁from a bookworm that loves to read

[Vanessa Sylvia · Rating 5 out of 5]

My go to author has come out with another reverse harem love story that deserves to be read. I could not put this book down once I started reading. Take one best friend who has had a crush on her bestie's brothers most of her life. Now her dreams are coming true only problem now it will not just be the four of them. A little surprise is on its way. Happy ending guaranteed.

I received a free copy of this book via Booksprout and am voluntarily leaving a review.