Boss Me Dirty: An Age Gap Workplace Romance

by Kai Lesy

“Tell me, Miss Medina…
Can you work for the man who knows what you taste like?”

That's the first thing my new client says to me.

In my defense, I had no idea my one-night mistake was Sebastian King.

Hot. Older. Billionaire heir.

Owner of a very expensive corner office and a very DIRTY mouth.

And, apparently, my new boss. FML.

Now I have twenty-one days to save his family's billion-dollar empire.

If I fail, my PR firm goes down with it.

No pressure. Just my entire career riding on the one man I've already seen naked.

Things I know about the notorious Mr.

He takes his coffee black.
He hates being told no.
And he remembers every sound I made in his bed.

I'm handling it. Mostly.

Until a board member makes a crack about my weight in front of the entire room, and Sebastian calmly tells him to apologize.

Then resign.

Well. Sh*t.

Apparently, ruthless billionaires going feral over my curves is my new weakness.

Then a pregnancy test stares at me dead in the

Two pink lines.

And the forty-three-year-old billionaire who swore he'd never have a family…

Just got me pregnant.



𝐅𝐨𝐫 𝐫𝐞𝐚𝐝𝐞𝐫𝐬 𝐰𝐡𝐨 𝐥𝐨𝐯𝐞: Silver fox billionaires, curvy heroines, and the one-night mistake that changes everything. A ruthless, dirty-talking CEO who goes feral when anyone disrespects his woman. Forbidden office sex, and so much more.

Genres: Contemporary, Romance

372 pages, Kindle Edition

Published October 5, 2026

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

[Isha Coleman · Rating 4 out of 5]

Deliciously wicked heartbreaker. From high alert to under the radar, prepare for sensory overload. Lesy brings the drama with a passion. Sebastian and Isabella are fire.

[Fiona · Rating 4.75 out of 5]

I really enjoyed the story of Isabella and Sebastian. The story starts with Isabella, drowning her sorrows because her boyfriend dumped her, and then she meets Sebastian after he breaks up with his female companion when he notices Isabella at the bar. They both go home together and have a one night stand. Well, that’s what it starts as, the next morning Isabella discovers that she has to represent the king dynasty and save their business. Little did she know that Sebastian King is now her new boss. There’s a lot going on in their business, espionage and fraudulent activities, and before he knows it, Sebastian is being framed for all of it, but with Isabella‘s help, they are able to clear his name and go onto have their happily ever after. What did kind of expected the pregnancy to come up during the whole story, but it wasn’t until the very last chapters that she let Sebastian know that he was going to be your father.

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

[Zelda · Rating 5 out of 5]

More than a Billionaire romance! 🥰🥰

Sometimes you have to stop saving everyone else. Love, loyalty, and learning to choose yourself is everything! 😍🥰 I love that this story jumps right in, pulls you under and keeps you hooked to the very end.

Isabella Medina, as smart, hardworking, and is the best at what she does. She is strong willed, and will stand up for what she knows is right. Sebastian King, is not only a billionaire COO to the family company but he's also trying to find his way in a work world that's trying to bring him down. He's also trying to make a name for himself and trying to get out from under his father's harsh words and demeanour.

Boss Me Dirty is not only a entertaining workplace romance but, it's a fun and addictive read that will leave you wanting more. 😍🥰 I do love a billionaire workplace romance with characters who can't seem to keep their hands to themselves from the start. The attraction was there, yes, but they could see it was more than just that.😍 You can see the chemistry both main characters have together. Their attraction for each other made the banter and tension feel so much higher. The thing they had in common the most was heart-wrenching, but seeing they were willing to stand up for the other, but struggling to stand up for themselves was heartwarming. My favorite part of the story was seeing a mix of drama, high tension with emotional moments, mystery that has you guessing and wondering, growth not only together but individually and so much chemistry and angst. 🥵😍🥰 I ABSOLUTELY love it! 😍🥰

Wow... just wow! Kay Lesy did it again. I can't wait to see what else the King's brothers are up to.😁🥰.

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

[Laura Sargent · Rating 4.75 out of 5]

Sebastian and Isabella are couple goals!! They meet in a bar for a one-night stand as a way for both of them to blow off some steam and frustrations in their personal lives.

Isabella is a virgin that just broke up with her boyfriend who told her that “she is too much work and not worth it to wait for.” She is a PR expert, who’s company has run into some legal troubles due to one of the partners embezzling enough money to support a small country and then some. Her family is a disaster due to her mother loving all of the wrong men for her entire life.

Sebastian is a workhorse following in his father’s footsteps as the COO of King Corporation. Sebastian has heard his entire life that he is the son that will lead the family as the eldest child but also being told by his father that he is a failure and disappointment.

Isabella is brought into King Corporation as a PR consultant to help them after they were 48 hours away from the deal of a century by trying to acquire a controlling interest in a biotech company. But at the last second another corporation swept in just under the wire and stole it from them. There was a leak at King Corporation that leaked the internal valuation model and leverage points.

Isabella and Sebastian have to fight to figure out who leaked the information while fighting off feelings for one another after they decide to be special friends that burn off steam together. Along they way there is additional betrayals and crazy things that come up along the way. Jump in you will not be disappointed!

I received an advanced reader copy in exchange for an honesty review!

[A79senlin · Rating 4 out of 5]

PR exec Isabella Medina has a make-or-break client: the King Corporation, heavily burdened by recent scandals. Her firm is collapsing under the weight of its own crisis and will be forced out of business if she doesn’t succeed. She’s facing a significant obstacle, however, in the form of COO Sebastian King, her recent one-night stand. Gone is the warm, gentle man she met that night; in his place is a cold, ruthless shark looking to get rid of her as quickly as possible, partly due to his continued interest in her. She knows the Sebastian she first met is there somewhere beneath his anger and resentment and is determined to bring him back. Up against a tight deadline, can Isabella save both companies and Sebastian too?

I enjoyed the back and forth between Isabella and Sebastian. She was smart and competent and knew she was the right person for the job regardless of what Sebastian seemed to think. She didn’t let his behavior affect her confidence, which I really admired.

The electricity between them sparked from the start and once Sebastian dropped the act, I enjoyed them getting closer, even I knew the “colleague with benefits” scheme would never work. I liked Sebastian’s inner struggles with falling in love and in becoming a better person. His fight against his upbringing felt real and I was rooting for him to move past it (same with Isabella). I really loved the two epilogues.

I received a free copy of this book.

[Dru · Rating 5 out of 5]

After a one-night stand with Sebastian King, PR executive Isabella discovers that he is also her new client. She has just twenty-one days to help save his family’s company, while managing the attraction between them and Sebastian’s difficult, guarded personality. When they grow closer, the professional arrangement becomes harder to maintain, and an unexpected pregnancy adds another complication.

I had a great time with this workplace romance. Isabella is smart, capable, and confident in her work, and I admired that she stood up for herself instead of letting Sebastian’s attitude shake her. Their chemistry is immediate, and their banter and tension made their scenes together fun to read. I also enjoyed Sebastian’s character growth as he confronts the influence of his father and learns to be more open and supportive. The emotional moments give the romance more depth than the office setting alone, and I liked seeing both characters become more comfortable with their vulnerabilities. The pregnancy arrives late in the story, which I would have preferred to see explored sooner, but that’s a personal preference rather than a major issue. Overall, this is a steamy, entertaining read with strong chemistry, satisfying character development, and two leads who learn to stand up for themselves and each other.

[Barbara · Rating 5 out of 5]

Boss Me Dirty was such a fun and addictive romance! I was hooked by the chemistry between the main characters and the tension that builds throughout the story. There’s something about a workplace romance with a powerful boss that always makes for plenty of drama, and this one definitely kept me entertained.

I really enjoyed the push and pull between the characters. Their attraction was obvious, but they had enough complications standing in their way to keep things interesting. The banter and tension made their interactions some of my favorite parts, and I loved watching their relationship slowly become more than either of them expected.

The story had a great mix of romance, drama, emotional moments, and steamy chemistry. I also liked seeing the characters deal with their personal struggles while figuring out what they really wanted from each other. There were definitely moments that had me frustrated, but I was invested enough that I had to keep reading.

Overall, Boss Me Dirty was an entertaining and steamy workplace romance with strong chemistry, a confident boss, and plenty of emotional tension. If you enjoy billionaire/boss romances, forbidden attraction, workplace drama, and characters who can’t seem to stay away from each other, this one is worth adding to your TBR!

[Kristi Palling · Rating 4 out of 5]

These two had such good chemistry. What started as a one-night stand turned into them having to work together, and I really enjoyed watching their relationship slowly develop.

I loved how she stood up for herself and made him realize that he was so much better than his father. I also really liked how he helped build her confidence, especially when it came to her body. The way they both opened up about their vulnerabilities, while still refusing to admit that what they had was becoming more than just an arrangement, was probably one of my favorite parts.

I also really liked seeing how much the male character grew throughout the book. He changed so much, and I loved watching him become a better version of himself.

My only little thing is that I would have preferred the pregnancy trope to happen a bit earlier instead of being saved for the very last part. But honestly, I love this trope, so that's more of a personal preference than an actual complaint.

Overall, I really enjoyed this one. Great chemistry, good character growth, and enough emotional moments to keep me invested.

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

[lf · Rating 5 out of 5]

One PR disaster after the other .... but can she save them and herself by the end

Boss Me Dirty is the first book in The King Brothers series by Kai Lesy. This is a solid and enjoyable start to a new series by an author I have read several times. Isabella Medina is an executive with a PR company that has a new client, King Corporation. Sebastian King is the COO of the family owned company that has been having a number of scandals which threaten to sink the company. Isabella and Sebastian meet one night at a bar and end up having a one night stand, no fuss and just a lot of fun as it turns out. So imagine both their surprises when she is the person to try and correct all the bad press and get King Corporation on solid footing again. But that does not even include both their crazy families, a bad partner at her firm who may just create a PR disaster for them, and then add in two pink lines. Yep that is going to be an interesting assignment to say the least....and a fun and engaging read. I am looking forward to reading the next book in the King Brothers world.

[Catherine Ramirez Leon · Rating 5 out of 5]

Sebastian and Miss Hale have combustible chemistry from their very first encounter, and the discovery that he is the powerful client whose reputation she must repair makes the situation even more deliciously complicated. I liked that she remains focused on proving herself as a public-relations professional even while their attraction keeps pulling them across a dangerous workplace boundary.

The twenty-one-day deadline gives the romance momentum, while the boardroom conflict, family complications, and surprise pregnancy steadily raise the emotional stakes. Sebastian can be ruthless and possessive, but his defence of her when her body is insulted reveals a protective side that makes his eventual vulnerability feel earned. This is a long, steamy age-gap romance with strong forced-proximity tension, a capable curvy heroine, an intense silver-fox hero, and satisfying grovelling before the payoff.

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

[Kim Wallmuller · Rating 5 out of 5]

Isabella and Sebastian first meet at a bar and go back to his place for the night and go their separate ways in the morning.

The company that Sebastian runs is going into a free fall after an information leak so his father hires a PR company to fix the problem. Isabella is the PR executive given the account. She's only given 21 days to turn the PR nightmare around or Sebastian could lose his job and control of the family company.

With Isabella's help they start to recover as Sebastian starts to embrace the challenge to be a better man but there are others trying to sabotage that recovery.

Isabella and Sebastian are strong successful people that have complex family relationship dynamics they have to deal with which adds an extra layer to a great story.

Sebastian & Isabelle story is very well written with sexual tension, angst, some betrayal and a little heartbreak but in the end a HEA.

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

[K. Smock · Rating 4 out of 5]

Sebastian King is the Ice King of his family and company. He is the heir apparent and currently the COO of King Industries. When they get into a PR nightmare, his father the CEO hires Isabella's PR company to help get them out of a tight jam. Things go from bad to worse when Isabella walks into the boardroom and the guy who will be his boss is the man she slept with and lost her virginity to is staring right at her. She cant refuse the job as her company is also in a situation and needs this account. Will they be able to work together? Will they be able to save their companies? Some good twists and turns is this story. Enjoy.

I voluntarily wrote this review from reading an advanced copy of this book.

[Lisa Young · Rating 5 out of 5]

Both Isabella and Sebastian are emotional and financial slaves to their respective parents. They both give all they can, until it almost costs everything. Isabella is a hard working woman with morals. Sebastian is a dutiful son; practically killing himself to keep the family and its legacy operating. Working together isn’t easy with their differences but the personal fire burns strong. I admire how smart and strong Isabella is; she is determined to save this company - and Sebastian is so moored in his living hell that he fears he is too lost to ever be saved. This is a very strong, emotional story that pulled me right in!!

[꧁ᙏᗣᙃⱿꙆᗣ꧂ · Rating 4 out of 5]

King Brothers Series :
✅ 1. Boss Me Dirty (2026) - 4 ⭐⭐⭐⭐
𝐒𝐄𝐁𝐀𝐒𝐓𝐈𝐀𝐍 "𝐒𝐄𝐁" 𝐊𝐈𝐍𝐆 𝐚𝐧𝐝 𝐈𝐒𝐀𝐁𝐄𝐋𝐋𝐀 "𝐈𝐙𝐙𝐘" 𝐌𝐄𝐃𝐈𝐍𝐀 - Family dramas, corporate schemes, relationships built on shaky ground, the development of mutual trust, a growing romance, support, love, the creation of a new family... and much more
An epilogue is always a welcome addition, and if there are two, all the better for me.
I’d love to read the stories of the Sebastian brothers—and then there’s Paloma, Izabella’s younger sister, so there’s potential for a series 😊👍

https://why-choose.com/authors/Kai-Le...
or
https://www.amazon.com/dp/B0HKZ8TPBV

[Tressa23 · Rating 4 out of 5]

Sexy Suspense
A well-thought-out story of a “benefits only” relationship between two professionals that slowly becomes anything but “only”, each has a toxic parent that weaponizes familial duty, throw in corporate espionage, and mix with hot spice. The combination of personal romance and professional intrigue makes this an excellent read. If you work in-office, this is your perfect lunch break read - except maybe brown-bag the cover like you did with your school books.
I received a free copy of this book via Booksprout and am voluntarily leaving a review.

[Stephanie · Rating 4 out of 5]

This is a nice quick romance read that gets straight to the point. The FMC and the MMC have great banter during the first half of the book but it kind of falls off as the book progresses. Each character definitely has some baggage that they bring to the table, which helps get to know the characters. I was really interested in the MMC's back story, when a snippet of his past is brought up! I wish it was expanded on more. It would help bring more personality to the MMC and more driving motive. Overall was a good book to read during the day.

[Tesh · Rating 5 out of 5]

Enjoyment isn't the word in regards to this book. Banter, innuendo and protection along with steam galore.

Isabella is given 21 days to raise Sebastian's company profile but she has seen him naked and he is very difficult to work with.

The rapport and the sparks that got between these two was so much fun. I enjoyed the intensity and the build up that just kept building.

It was so well done. I really liked the whole experience and it met all my ticks in every level. So good!.

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

[Laura · Rating 5 out of 5]

I found Isabella and Sebastian's story a terrific read. They hook up before they realize they will be working together. This attraction does not really interfere with their work relationship, but does undermine Isabella's talents. As the storyline progresses, things at work become more complicated and then Isabella reveals an unexpected surprise.

If you enjoy complicated work romances, this book is for you.

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

[Michelle Odwin · Rating 5 out of 5]

Isabella and Sebastian's story. Isabella and Sebastian have a one night stand and then find out that they need to work with each other to save their companies. Both have issues with one of their parent, Isabella with her mom and Sebastian with his dad. They grow closer as time goes on, but will Sebastian be able to do the right thing when every thing falls apart or will he lose the one person who truly sees what he's worth. Really good story.

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

[Vanessa Sylvia · Rating 5 out of 5]

Loved this story. The characters are well written. It was easy to get hooked into their world. I did not want to put this book down. My favorite part is that the characters are complex each with their own baggage. I love that both are strong willed with sparks flying whenever they meet. Steamy scenes and hot chemistry add to the story along with their happy ever after ending.

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

[Kittykat2103 · Rating 4 out of 5]

When your company is going into free fall & you bring in PR agent to fix the problem. Little did you know that not only would your company thrive but your personal life would become something else.

Sebastian & Isabelle story is fantastic well written with sparks, angst, a little heartbreak but at the heart of it a HEA.

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

[Arntheblarn · Rating 4 out of 5]

If you like strong female characters & the men who aren't intimidated by them but embrace the challenge to be a better man as well as a suspenseful workplace disaster they solve together, you should read this book. On top of that, there are some complex family relationships which add an extra layer of depth to a great story that has a lovely HEA. Read it & enjoy!

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

[Sherry Kern]

Isabella is a strong female character who does not compromise. Whether it is her profession or love life.
Presenting both Isabella and Sebastian as strong successful people that can still be made to feel less than by family members makes them both courageous and vulnerable.
I would recommend this book to every female I know so they can see we do not have to compromise ourselves for love.

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

[Nancy Nardone · Rating 5 out of 5]

This was an intriguing read. There were the standard tropes for a romance: relationship goes through tough times, Sebastian is physically fine, Isabella is curvy, uninhibited sex scenes. The story line also took some different paths to the HEA. There were parent/child issues, truly ethical conflicts, and a redemptive character. This is a romantic, well-written book you should take the time to read.

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

[Marilyn Smith · Rating 5 out of 5]

She had a one night stand and went on with life. But then her PR firm gets a new client and it him! He’s a billionaire and has a mouth that doesn’t stop and keeps referencing the one night stand! She has a set time to help him keep his billions or she loses her firm also! But they end up to close and now she has a secret! What now?.

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

[Jessica OBryant · Rating 5 out of 5]

Ok, I'm absolutely in love with this story. Like, head over heels in love. I'm not usually big on age-gap stories, but this one weaved its way into my heart.

I completely adore Isabella and Sebastian and the way they met. They have such incredible chemistry. Loved the banter and loved how Isabella stood her ground with Sebastian. Boss Me Dirty was such a phenomenal read, one I won't soon forget.

[Cassie · Rating 4.75 out of 5]

This book has it all. Fun witty characters with their own baggage. Loved the banter between these two strong characters. They were both closed off in the beginning but figured out what they wanted and opened up to each other.

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

[Christina Morantz · Rating 5 out of 5]

Isabella and Sebastian have a wild night together and a few days later... She winds up being hired by his company with a PR scandal. Their banter and understanding of each other holds no bounds and is honestly some of the best writing that I have read.

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

[Sinful Bookwyrm · Rating 4 out of 5]

Loved the chemistry between these two! I really enjoyed their slow-burn relationship, emotional growth, and how they helped each other become better versions of themselves. The pregnancy trope was a fun bonus. Overall, a steamy and enjoyable read!.

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

[Marilyn Smith · Rating 5 out of 5]

Loved this one!

Loved the way Isabella and Sebastion met. Loved both their families and this is such a good story. Didn't care for Isabella mom or the way she treated her daughters. Sebastions father was mean and cruel. But both Isabella and Sebastion turned out better than their parents. Good story.