Baby Surprise for the Billionaire Grump

by Gwynne Hart

I never planned to fall for a lie.
Or have a baby upend my billionaire life.

The moment she steps onto my jet, her lie changes everything.

Pretending to be my new assistant, she’s a perfect mix of sexy and savvy.

The adjoining door between our hotel rooms?
Off-limits, but too tempting.
Neither of us can resist.
One wild night, and I can’t walk away.

Then I find out the truth.

I should have cut all ties.
Instead, I make her work for me, as payback for her deception.

Do we keep it all business? Not a chance.
We can’t keep our hands off each other.

She’s hiding something, and it’s driving me crazy because I’ve fallen for her.

My control is slipping, and everything’s on the line—my business, my reputation, and her.

And I've just found out the secret she's hiding.
I’m going to be a father—her baby's daddy.

----

You'll love this off-limits enemies-to-lovers romance because its sizzling tension, heartfelt confessions, and unexpected twists will have you hooked from beginning to end.
Standalone, guaranteed happy ever after.
Get it now.

270 pages, Kindle Edition

Published January 10, 2025

Reviews

[Beverley Chance]

This is a fast-paced, spicy romance that’s hard to put down. The story follows a billionaire whose life is turned upside down when a woman, pretending to be his assistant, stirs up unexpected emotions. One wild night together leads to a sizzling attraction, but when the truth comes out, the stakes get even higher—he’s about to be a father.
The chemistry between the main characters is electric, and the tension keeps the plot moving quickly. Though packed with heat, the story doesn’t skimp on emotional depth, and I found myself fully invested in their relationship. It’s a quick, entertaining read that blends romance, suspense, and surprise in a way that keeps you hooked.
If you’re looking for a steamy, fast read with great characters, this book is perfect!

[Jayne Wheatley]

So many gaps in story and timeline Which took away from the story.
A few parts not making sense due to this.
Met boss sleeps with him a couple of days later she feels sick and has sore boobs takes pregnancy test and it’s positive then she goes to dr next day and it’s confirmed, then he proposes same day. It was all so rushed that it lost the enjoyment it could have had, then we didn’t see gran better than before and was Justine good at the job and did she keep the job and friendship, we didn’t find out so again a part left open that could easily have fitted into the storyline.
Due to this it wasn’t for me but I did like the characters I loved how sweet Duncan turned out to be he doted on Lana.

[Heather Deaton]

I love humor as well as spice in my romance books and this did not disappoint! My family was annoyed at how many times I'd laugh out loud, but I couldn't help it! Gwynne is great at describing the characters so you understand how they're thinking and feeling and root for them to have their HEA. The only bad part is the story is short, so the timeline is short, but that makes for a great quick read. I definitely recommend this to everyone for a good laugh, not to mention some hot scenes!
My rating system:
5=will read again
4=recommend to everyone
3=recommend to anyone liking that particular writing style/trope
2=do not recommend
1=DNF

[Lorie]

I could not put this book down. Leah’s story will tug at your ❤️ strings, have you laughing and bring you excitement within minutes of each other while reading this book. When Leah’s roommate begs her to impersonate her for a few hours, Leah begrudgingly does it but meeting Duncan has been a game changer. Lies, detail work, emotions and intense feelings lead these two down a very bumpy path. Can Duncan win Leah over or will she run? Can Leah survive giving up some control of what’s controlling her life?.

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

[Lauren Cearfoss]

Anyone looking for a steamy romance, read this book! I started reading it with the intention to put it down and come back later but I couldn’t put it down! I read the whole thing at once. I love that the characters are flawed and relatable. After I was done reading I just wanted to read more about Duncan and Leah. This book has it all- deception, real-world problems, tender moments and steamy romance. Highly recommend!.

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

[Merry Jelks-Emmanuel]

Leah goes more than she bargains for when she goes in place of her friend to drop off papers that has her flying off to New York with the boss. Duncan knows that something is off but can't place it and as he spends time with Leah feels overcome him. When he learns the truth will he and Leah's relationship continue to blossom and lead them along the path to happiness.

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

[Barbara]

If you have never read anything by Gwynne before then she has you covered in this romance story about Leah and Duncan. Just know that once you begin reading not only this book but all of her books you’re going to be instantly hooked. OMG this romance story is AMAZING, and I found myself smiling at times over the things Leah and Duncan say. So, grab this 10-star book today and see what these characters have for you.

[Suzanne Normandeau Legault]

I simply loved it from beginning to end ❤️! Gwynne’s books are compelling from the very beginning. Read this one in a few hours 😅. Duncan and Leah’s journey is unexpected, entertaining, alluring and powerful. Together they’re strong and perfect. Deceit and manipulation is what initially brings them together but they didn’t anticipate the chemistry all the lying would cause nor the love ❤️ born from it! A real page turner and very recommended reading !

[Helen Lohman]

I loved this book! Gwynne does a fantastic job creating characters that are relatable and the banter between the two main characters is perfect. She had me crying alongside the female main character. The romance and spice of this book was perfectly blended. While the male main character was a grump, we did get to see the softer side of him too. Can’t wait to read more of Gwynne’s books!

[Sherry Gatewood]

Very High School

The characters and dialogue were, surprisingly, very immature. I didn't notice it was less than 200 pages, which might be why the entire book spanned a period of time that was barely over one pay period. All of it, just - ridiculous. It surprised me, because I've read some of her other books and liked them.

[Pat Stanton]

Sweet love story

Leah is portrayed as a strong heroine, able to deal with whatever is thrown at her. Duncan is successful and dominant, although immediately attracted to Leah, who pretends to be her flighty roommate. I enjoyed their story and how they were able to grow together.

[Margaret]

Duncan and his assistant

Duncan can’t keep assistants, he has no time for incompetence, he now has a new one, only the one who turns up is apparently not who he hired and it took a few days to find out what happened.
Loved this book, full of love and romance, kind of an instant attraction , very unlike both parties.

[Theletter12]

Duncan and Leah

Summary captured story pretty well. He is supposed to be this tyrant but around her he seems all soft. She has to be his assistant for six months because her roommate screwed him over. They both can’t resist each other and somehow two forms of birth control don’t work. The minute he finds out he’s running to buy the ring.

Hea baby girl Grace and trying for another

[Cynthia]

This was a really good book and the first that I read by this author. There was so much hot chemistry and passion between Leah and Duncan. Even though their relationship started out as a lie, the passion was undeniable. I strongly recommend this book.

[Reader]

I adored this quick read. Leah and Duncan were everything. I loved their banter. The spice was top notch. I didn’t want this to end.

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

[Julie Juhl]

I loved Baby Surprise for the Billionaire Grump by Gwynne Hart. The author does a great job in combining great storylines and unforgettable characters! I am already looking forward to her next book!.

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

[JensBookHaven]

⭐️⭐️⭐️⭐️/🌶️🌶️🌶️

Couldn’t put this book down! Very quick read, but it was the perfect amount of witty banter, spice & emotional depth. This is a great read for anyone looking for a fast read with great characters!

[Narelle]

Leah and Duncan's story starts as a case of mistaken identity but soon contains plenty of steam, sizzle and sass. I would've loved an epilogue or extra chapter to see where the couple headed next.

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

[Holly]

Very entertaining and enjoyable story.
It’s a lot of going on but everything slowly falling into place where supposed to end.
Characters are very quirky, sweet, funny and annoying at the same time.
Romance is spicy.

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

[Sheron]

Baby surprise for the billionaire grump

Great short and sweet book. Very much enjoy and not too much drama. Going to read more from this author

[Danielle]

Once I got going, I could not put it down! The chemistry between the two MCs is electric. And Leah's story feels all too relatable.

I did receive this as a ARC with the promise of a review

[sheryl blaszczyk]

Really sweet story

Just a great story. The banter was funny and the romance hot. Wished for more though. It feels like it just stopped lol

[bookmarkedbusy]

Everything happened too quickly, it was almost instalove. I did like the main characters but the plot needed more time to build

[a little bit of everything.]

dnf

[Cindy Boesl]

It was ok not as great as book 4. Two epilogues but what happened to her BF “sister”? Little disappointed with this one after book 4.

[Denise Tocci]

I so loved this story, these 2 characters were meant for each other. Great plot, great character development, terrific epoligue. One of Ms.Hart's best,give it a read ,you won't be disappointed.

[Alice Twiford]

Baby Surprise

Good book. Enjoyed the dynamics between Duncan and Leah as well as between Leah and Justine. Glad Justine came around.

[Nate]

Baby surprise for the billionaire grump was Duncan and Leah’s story. It was an interesting read. I got a copy of the book and voluntarily leaving my review.

[Hayley Canigiani]

This was my very first billionaire romance, and I absolutely loved it! I went in with uncertain expectations, but I was pleasantly surprised by the perfect balance of steam and substance. The backstory and plot truly kept the story engaging. Leah and Duncan's chemistry was electric, and I found myself so thrilled with how everything unfolded! While Justine wasn't my favorite character—she felt more like a source of tension in Leah's life rather than a beloved figure—I appreciated her role in the narrative. I wholeheartedly recommend giving this a read, and I can't wait to dive into the rest of the series!
I received a free copy of this book and am voluntarily leaving a review.

[Darlene Palmer]

What started out as a ruse ( a favor for a friend), turned into a challenging feat.
The author paints a picture of a struggling woman, down on her luck but making her way in life.
The charismatic boss with looks that would take any woman to her knees.
Back and forth banter between the two, opens the door for new clarity. One night changes everything.
This book was a fun read, full of passion, sexy times and swoon worthy palpitations.
Let your mind runaway with Duncan and Leah, what an experience that would be.