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Birthday Boy

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Cole’s 18th birthday is just around the corner, and there’s only one thing he to lose his virginity to the woman of all his fantasies…. his best friend’s mom. If she gives in just once, they can keep it a secret, right? Her son never has to find out...

156 pages, Kindle Edition

Published October 28, 2023

220 people are currently reading
899 people want to read

About the author

B. Sobjakken

24 books1,296 followers

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5 stars
464 (23%)
4 stars
661 (33%)
3 stars
601 (30%)
2 stars
169 (8%)
1 star
59 (3%)
Displaying 1 - 30 of 306 reviews
Profile Image for Mia S..
585 reviews42 followers
September 29, 2024
Smut

Yes smut but I will say I love the reverse since there is so much out there with older men younger women, I mean almost everything with age gap has that, this is age gap forbidden with friends mom. And lots of spice, short, but actually had a story!
Profile Image for Sonia.
1,352 reviews2,157 followers
March 15, 2026
reverse age-gap goodness

And one where he’s been waiting for his birthday to come to do the thing he’s been wanting for a looong time…

To ask his best friend’s mom to take his v 😉.

HAPPY BIRTHDAY TO HIM 😉

Cole (18) has been wanting Olivia (36), the woman who stars in his fantasies, for years. He turns 18 and it’s on

LIKE KING KONG WITH A BIG OL DOOOONG 🤣😮‍💨

Olivia can’t resist him 🤷🏻‍♀️. He’s young. He’s ENERGETIC 🥵 and VEEEERY willing 🥵

And he’s a QUICK STUDDDDDDy too 😉

I loved:SPOILERS
—the audio is duet narration 👏🏻
—how obsessed he is with her 😮‍💨
—that he’s a v👏🏻
—that there’s sneaking around happening
—that he makes sure his 💦 stays inside her
—that he loves to taste her 🥵🔥😉💦
—that we get a cute HEA epilogue 🥹
—that we even get brief OMD 😈
—and consequences to no condoms 😮‍💨
—and NO OWD 👏🏻

i wish:
—It was longer 😭

Overall, I loved it

⚠️safety squad⚠️
-no cheating/sharing/owd
-the h goes on a date to try getting over the H but the H and the h’s son crash the date 🤣
-no condoms 😈/virgin H/celibate h
-HEA/epilogue/4+ years later
Profile Image for Mysti.
2,071 reviews314 followers
June 18, 2024
This author seems to cut a lot of her books really short. They stop without ever giving a satisfied conclusion. That said - the sex is hot.

Cole (18) has the hots for his BFF's mom, Olivia (36). On his 18th birthday, he skips school and goes to the house and begs her to take his virginity. She doesn't want to because of obvious reasons. She ends up giving in and once they start - they can't stop. It helps that he has a big d!ck. Eventually, BFF Jensen finds out and is furious, as you'd expect. Jensen decides he can't stop things, but he's still not happy about it. Cole and Olivia end up as a couple. The end.

My only issue is the ending. After they decide to be together, we jump to the epilogue of them playing with .

We don't really get to see them build a relationship that doesn't involve sex. I'm not complaining about the sex - it's good. I can't describe what I'm trying to say. I guess you should read it so you can tell me what I'm feeling.
Profile Image for Peppa.
1,383 reviews107 followers
April 16, 2025
Okay but YES to this!! It’s short, filthy, and gave exactly what it promised. We love a good age gap, but this one flipped the usual script and I ate it up—older woman/ younger man (her kid’s friend?!) Forbidden, delicious, and so hot!!

There’s so much out there with the same tired older man/younger woman trope, so this felt like a breath of fresh, horny air. And despite being mostly smut (which, no complaints), there was actually also a nice little story to it!! Just enough to give it some depth and make the tension sizzle.

Super spicy, fun, and honestly I’d read a whole series if it was just hot MILFs corrupting their son’s besties.

Profile Image for vivareads .
329 reviews50 followers
March 16, 2024
I mean I was kinda bored so I picked this up🫣
Profile Image for nitya.
469 reviews338 followers
April 16, 2025
- age gap (older woman/younger man)
- best friend's mom
- 🔥🔥🔥🔥

enjoyed this one!!

Content warning: parental death, past death of spouse, off page violence (not main pairing), explicit sexual content
Profile Image for Jen.
421 reviews73 followers
February 2, 2024
This is very WHAM BAM THANK YOU MA’AM. Take that for whatever it’s worth.
Profile Image for angie_bookrecs.
287 reviews51 followers
November 18, 2023
This was hot. More storyline tan any of the others I've read so far, which I appreciated.

But I still need to know...what was Jensen hiding?And why was he at the park?
This entire review has been hidden because of spoilers.
Profile Image for when the hype is over.
195 reviews12 followers
December 13, 2025
Reverse age gap with the H pining for his best friend’s mom? Yup, I gotta read it.

While there are loads of age gap romance books out there — it’s not often that I stumble upon the reverse age gap trope which is why I’m always a bit intrigued when I do see it. This novella especially had a bunch of tropes that I only ever saw in novellas/books with an older H and a younger h. I thought it would be interesting to see how things would play out with all of these tropes switched around.

As it turns out, there was not much emphasis on a real plot or the individual characters.. it was more of a smut fest tbh buuuut that’s okay. I didn’t really expect much — especially bc this is only a novella and …well, just look at the cover 🤣 It would be interesting to read the novel version of something like this though with fully fleshed out characters and a gripping romance story etc.


Safety:
Profile Image for warhawke.
1,576 reviews2,233 followers
January 23, 2026

Genre: Contemporary Romance
Type: Standalone novella
POV: First person- dual
Rating:




There was only one woman Cole Peterson had ever wanted, and he was determined to turn his eighteenth birthday fantasy into reality. However, the woman in question was his best friend’s mother, Olivia Matthews, and crossing the line could change the lives of everyone involved.



Even at a young age, Cole carried himself with confidence, especially with his filthy mouth. Olivia had been alone for a long time and took the opportunity for her own happiness despite the reservations that initially held her back.

For a short book, this one delivered in both spice and plot. Their family history and the relationship dynamics added depth and heart to the story.

Birthday Boy is a story of pursuing desires. It would appeal to readers who enjoy a quick, sexy read.





🎈🧁🎈. . . (F)BR with Twinsie CC . . .🎈🧁🎈



For more reviews/interviews/book talk/promo visit:



For graphics, trailers & author services visit Warhawke Design Studio.

Profile Image for Kate Russo ❦ (Rina Kent’s Version).
449 reviews94 followers
December 19, 2023
This was cute and I think this is my first reverse age gap and honestly I loved it ALSO SO LIKE ARE WE GETTING A JENSEN BOOK ORRRRRR
Also I’m ngl I swear I think she rly only saw Cole as more than her sons best friend when he told her his feelings and from than on it felt like she couldn’t stop thinking abt her ex and don’t get me wrong idk what that’s like but idk it felt like she wasn’t rly over him and just kinda was with Cole bc he was there and showed an interest BUT I do believe she did fall in love with him over time
Profile Image for Shernell Joseph.
905 reviews23 followers
March 24, 2024
This was a very nice read but I felt like you should have been a full book.

Side notes, I really do enjoy taboo story lines I normally read MMC being older but sometimes I enjoy FMC being the mature one.
It took me awhile to finish but when I finally got into the story It ended!! The characters was great, just wish there was more. It also wasn't as dirty has I thought however It has a really nice happy ending.

I just wish I had more interaction with The FMC and MMC.

Profile Image for Alexandra.
585 reviews1,088 followers
March 1, 2025
HOT HOT HOT. he’s in love with his best friends mom
Profile Image for Kriste ☾Papartis ir knyga☾.
379 reviews45 followers
September 23, 2025
Jam sueina 18. 🎉 Ką jis sugalvoja gimtadienio proga? Ogi paprašyti geriausio draugo mamos… kad ji taptų jo „pirmąja“. Tobula, ar ne? 🤡 Aišku, mama du sakinius pavaidina moralę – „oi negalima, aš vyresnė, čia neteisinga“ – bet po minutės jau lovoje. Nes kodėl gi ne.

Tada, žinoma, sužino sūnus. Drama, pykčiai, „kaip tu galejai?!“ – o tuo tarpu veikėjai toliau smutina kaip profesionalai. Nes jis, žinoma, nekaltas, o kas gi labiau tinka už „experienced best friend’s mom“ kaip mokytoją? 👀

Ir staigmena, kurios niekas tikrai nelaukė – ji pastoja. Su dvyniais. ✨ Nes aišku, kodėl gi baigti šitą šedevrą be tokios telenovelės kulminacijos?

Rezultatas: smut smut smut + absurdas + nėštumas.
Profile Image for Sienasummerrreads.
668 reviews359 followers
October 26, 2025
This novella is deliciously spicy, and to top it off, the audiobook is brilliant. If you pick this one up, definitely go for the audiobook it’s in duet narration by two fantastic narrators.

Since this is a novella, it’s quite short, so I don’t want to give too much away. But I really enjoyed this fast-paced, steamy read. It was just a fun, forbidden, spicy good time. Cole was so forward about what he wanted, especially for someone who was so set on Olivia. The description of a tree trunk had me screaming. I liked how Olivia tried to push him away, but it didn’t work she gave in. For all the heartache she has gone through she deserves to be happy.

I also appreciated how Cole came across as mature, even if there were a few moments that showed his immaturity since he had only just turned eighteen. If this had been drawn out into a full-length novel with angst and slow-burn tension, I would have been in heaven, because I really did love these characters.

Genre/Type: Adult Romance 18+
APK: Audiobook ALC
Audiobook Length: 2hrs 40mins
Narrators: Savannah Thomas and Connor Crais - Duet
Rating: 🌟🌟🌟🌟
Spice: 🌶️🌶️
Series or Standalone: Stand Alone Novella
Tropes or Themes: Best Friends Mum, Age GapLove After Loss, Sports (NFL), Accidental Pregnancy, He Falls First, Obsessive MMC, Jealousy, Medical Content, Blood, Sexual Content, Dirty Talk, Praise, Oral, Reverse Virgin, Car Scene, Kitchen Scene and Impact Play.
Check Triggers ⚠️ 💫

All Round Romance Reader 
Sienasummerrreads 💕📚
TikTok | Instagram | Goodreads | StoryGraph | Fable | Everand | Amazon | Audible Reviews 💫
Profile Image for torii.
322 reviews14 followers
August 14, 2025
A smutty little novella at its finest.
Loved Cole and Olivia.
And it had my favorite trope at the end 😉


Even better in audio! And Connor Crais narrating…Chefs kiss 🥳💋💋💋
Profile Image for Paloma FC (in my reading era).
370 reviews65 followers
March 5, 2026
4 / 5 ⭐️
4.5 / 5 🌶
Spicy Chapters: 3, 4, 7, 10, 11, 12, 17

Cole (MMC) and Olivia (FMC)

I'm not going to lie, I picked this book up searching for spice, and wow! it did not disappoint. The spice is the plot, and it is 👨‍🍳 💋.

So, if you are in search for a short, hot novella with plenty of spicy scenes and dirty talk that will probably make you blush 🥵🔥(but not much realism or depth in terms of the story and characters), this novella is definitely for you.

Happy reading! 📚
Profile Image for Misty's Book Space.
1,107 reviews52 followers
November 8, 2023
I recently came across this book when I was doom scrolling on Instagram. The person was raving about it and it made me want to read it plus I'll admit I was drawn in by the cover. This was a really quick read and that really messed with my enjoyment of it. Everything happened way to fast and it was hard to connect with the characters and the relationship. I would have liked for this one to be a full length novel. I feel like if we could have gotten more build up and more groveling this could have been great. It was pretty steamy but also kind of cringy. 
Profile Image for Samantha.
497 reviews17 followers
October 30, 2023
A birthday to remember!

This was super fun, filthy and fast paced. B never disappoints when it comes to spice.

I love a good Best friends mom, as much as she tried to fight and deny the attraction Cole was persistent. Boy knew what he wanted and he was going to get it. I loved his filthy mouth, it being straight to the point, and him ’putting what he gave her back inside’ is one of my weakness’ I swear. This author always gives her readers what they want! Enjoy
Profile Image for TTP.
432 reviews
December 13, 2025
This was a smutty book, but oh did I enjoy it.

H is in love with his best friends mother, and when he’s 18 he wants her to take his v.
h is a 36 years old single mom to her 18 year old son, and his best friend practically lives with them bc his mother is a shitshow.

Wished we could have seen more of how the relationship between the best friends have developed and that they could get back the friendship they had - sadly that didn’t happen.

Not a good palet cleanser, easy and short book.

Safe, H is a V and only ever looked at h.
h has only ever been with her husband, who died two decades ago.
This entire review has been hidden because of spoilers.
Profile Image for Anna.
936 reviews646 followers
August 17, 2025
Oh my god this was so hot & DIRTY AS HELLLLLLL.

Cole just turned 18 and wants his mom’s best friend so he shoots his shot &… 💦😛🫣😌🙂‍↕️💋


I am a sucker for an age gap romance & I do enjoy when the woman is older so this one was veryyyyy delicious!! The audio was very good especially because it’s Connor f**king crais whispering soooo many dirty things in your ear hehe

Spice: 🌶️🌶️🌶️🌶️
Type: audio

Tropes
🎁 age gap (she’s older)
🎁 Forbidden
🎁 best friend’s mom
🎁 virgin MMC
🎁 surprise pregnancy
🎁 novella
Profile Image for Tyleigh Clark.
162 reviews11 followers
November 17, 2025
Wowowowowowow this was HOT.

Think Stacy’s Mom, if Stacy’s mom had given him a chance🤣

The audiobook was magnificent and super quick! Such a great palate cleanser!

4⭐️|3🌶️
Profile Image for Nerdy.Scientist.Reads || NERDY.
506 reviews109 followers
August 24, 2025
Birthday Boy was a quick, taboo, fun read/listen. Cole has had a crush on his best friend's mom for as long as he's known them. When he turns 18, all he wants is her so he shoots his shot with the older widow, and my goodness the way he goes about it. With the way Cole dirty talks, you would never think he still held his V card. But momma still has a thing or two to teach him. Man, this was such an entertaining book. I actually anted more. I'm such a sucker for 'he falls first...and hard' trope

I think the audiobook heightened the experience because Connor Crais and Savannah Thomas were so freaking hot in their duet performance.
Displaying 1 - 30 of 306 reviews