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Blue Balling the Demon: MM Fantasy Romance

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Valerius is the Underworld’s greatest an incubus bored to death by pleasure.

For Valerius, the act of seduction is tedious, the mechanics are messy, and the payoff is never worth the effort. He’s starving, wasting away in the mortal realm because he’d rather wither than endure another night of meaningless friction. He needs sustenance, but he needs it refined. He needs pure energy.

Then he meets Sir Kaelen of the Silver Order.

Kaelen is six-foot-four of holy muscle, righteous fury, and a vow of celibacy so strictly enforced it has turned him into a walking nuclear reactor of repressed lust. To Valerius, the Paladin doesn’t smell like a man; he smells like an all-you-can-eat buffet of white-knuckled restraint.

The arrangement is simple. Valerius uses his demonic senses to help Kaelen hunt the monsters plaguing the countryside. In exchange, Valerius gets to hover in Kaelen’s shadow, feeding off the delicious, intoxicating heat radiating from the knight’s pent-up frustration.

No touching. No seduction. Just pure, agonizing proximity.

It’s the perfect diet—until the nights get colder, the bedrolls get closer, and Valerius realizes that Kaelen’s resolve is starting to crack. The Paladin is looking at him not like a monster to be tolerated, but a sin to be committed. And for the first time in centuries, Valerius isn’t bored. He’s ravenous.

When the holiest man alive finally decides to break his vows, Valerius learns that the only thing more dangerous than a demon’s hunger... is a saint’s loss of control.

117 pages, Kindle Edition

Published December 9, 2025

46 people are currently reading
24 people want to read

About the author

Callie Colby

25 books17 followers
Callie is a romance author who believes every love story deserves a happy ending — and a little heat along the way. Known for her lighthearted, swoony, and steamy novels, she delights in creating characters who make readers laugh, blush, and believe in love. When she’s not writing, Callie can be found hunting for the perfect vintage teacup, baking wildly over-decorated cupcakes, and choreographing impromptu kitchen dance parties to 80s pop hits. She lives with an ever-growing collection of romance paperbacks, a mischievous cat named Biscuit, and a firm conviction that love — like sprinkles — makes everything better.

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5 stars
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Displaying 1 - 9 of 9 reviews
Profile Image for Elizabeth.
478 reviews99 followers
February 6, 2026
I picked this book up for the hilarious title. It wasn't really a great reflection of the book and things went downhill from there. I don't know if the book was written by AI (I saw some inconclusive rumours online) but it is tedious, repetitive and has weird phrasing and a completely inordinate amount of sentences like.... this. I barely made it through the book and that's only because it was so short.

Who would have thought, he mused as he settled back onto the cot, that the cure for an incubus’s boredom would be not just the perfect meal, but the perfect partner? (p. 104)

Who would have thought, he mused, watching the steady rise and fall of Kaelen’s chest in the dimmed light of their chamber, that the cure for an incubus’s boredom would be not just the perfect meal, but the perfect match? (p. 116)


“A realization I’ve been considering. An observation about our particular… dynamic.” (p. 110)

“A shift in what provides the most… nourishment.”(p. 110)

“I’ve realized that the most potent energy, the most satisfying sustenance, comes not just from your desire or even your pleasure, but from a specific… emotional state.” (p. 110)
Profile Image for kait of LitWit .
132 reviews4 followers
January 28, 2026
There’s no effing way this isn’t AI

The language choices are just.. a little too weirdly thesaurus-y, and it’s repetitive as hell. See the 10 quotes I highlighted, all repeated phrases within a page or 2 from each other
Too bad, bc it’s a cute premise but

Fuck AI and all AI slop forever🤬
25 reviews1 follower
January 15, 2026
Cute concept but the dialogue was too full of quips and there were too many repeating internal monologues (including one twice in the same chapter with almost verbatim language).
Profile Image for Abigail Beckwith.
1,702 reviews
January 1, 2026
Here's Callie Colby's "Blue Balling the Demon." It's the fifth book in her Hotter Than Hell series.

["Valerius is the Underworld’s greatest an incubus bored to death by pleasure.

For Valerius, the act of seduction is tedious, the mechanics are messy, and the payoff is never worth the effort. He’s starving, wasting away in the mortal realm because he’d rather wither than endure another night of meaningless friction. He needs sustenance, but he needs it refined. He needs pure energy.

Then he meets Sir Kaelen of the Silver Order.

Kaelen is six-foot-four of holy muscle, righteous fury, and a vow of celibacy so strictly enforced it has turned him into a walking nuclear reactor of repressed lust. To Valerius, the Paladin doesn’t smell like a man; he smells like an all-you-can-eat buffet of white-knuckled restraint.

The arrangement is simple. Valerius uses his demonic senses to help Kaelen hunt the monsters plaguing the countryside. In exchange, Valerius gets to hover in Kaelen’s shadow, feeding off the delicious, intoxicating heat radiating from the knight’s pent-up frustration.

No touching. No seduction. Just pure, agonizing proximity.

It’s the perfect diet—until the nights get colder, the bedrolls get closer, and Valerius realizes that Kaelen’s resolve is starting to crack. The Paladin is looking at him not like a monster to be tolerated, but a sin to be committed. And for the first time in centuries, Valerius isn’t bored. He’s ravenous.

When the holiest man alive finally decides to break his vows, Valerius learns that the only thing more dangerous than a demon’s hunger... is a saint’s loss of control."]

So far, this is the first book in the series that isn't set in the twenty-first century. Which is intriguing as hell.

As is Valerius and Kaelen's arrangement. I couldn't help but constantly think: is Valerius feeding so easily off of Kaelen's righteous vow and pent-up frustration OR is Valerius feeding so easily off of Kaelen because they're fated?

Valerius was not your conventional incubus, just as Kaelen was not your conventional paladin. They both had thoughts, feelings, desires, dreams that made them uniquely their own, uniquely similar to each other, and uniquely the opposite of what their brethren would accept. But together, they proved to be stronger and more powerful than their brethren. And (a lot) more philosophical (soooo many deep as fuck thoughts).

#summoningmrwrong #summoningmrwrongormrright #hisinfernalpurr #exorciseme #devilwearsnada #blueballingthedemon #calliecolby #hotterthanhell #hotterthanhellseries #books #queerbooks #queererotica #bodicerippers #bookstagram #bookphotography #ilovebooks
Profile Image for Sunny Groves.
434 reviews3 followers
January 28, 2026
okay first of all what the fuck is this title, respectfully

thoughts n feelings:
-the cover is really nice and serious and the plot itself actually was like, a PLOT, so I have no idea why the title is what it is, but it almost turned me off from reading this entirely.
-there was only 1 sex scene in this???? MAYbe two but it just seemed remarkably lacking for a book that is about a sex demon and literally has "blue balls" in the title. but also usually when you have the like, virgin/experienced dynamic (kaelen wasn't necessarily a VIRGIN but celibate for 9 years ends up reading pretty similar) there are multiple scenes of them exploring their physical connection but we barely got any of that. the book itself was super short so it's not like there wasn't room. the only one getting blue-balled here was me, bitch
-the plot itself was fine but also I felt kind of unnecessary in its current form. it was very rushed and they tried to fit a whole bunch of conflict into a really short period and while I liked the general direction it went in, ultimately it was strange for the author to attempt a serious plot while also titling it what it is. I am so very not over the title, if you couldn't tell.
-the writing in this was surprisingly repetitive for how advanced the vocabulary was, and the banter was not my favorite. presumably in an attempt to lean into the sardonic seductor vibe incubi are usually written with, almost every word out of Valerius's mouth is sarcastic and in almost exactly the same format every time with slight variations and it's both noticeable and annoying. you've been alive for thousands of years, presumably. get a better schtick, my man.
-unsure if coincidence but this book is remARKABLY similar to Tavia Lark's Radiance series, specifically books 1 and 3, both in characterization and plot and worldbuilding. but TL does it way way better and more fleshed out (sorry) so I highly recommend THAT series instead (sorry again)

TLDR: If you wanna write a serious book, write one. If you wanna write a fuckass book about a sex demon, do that, but you gotta pick one or the other.
Profile Image for Thurman.
661 reviews8 followers
January 16, 2026
Good concept, but wasn't executed well.
I liked both Valerius and Kaelen. Their interactions were good. Even the overall plot was ok. But the sex was just ok. They didn't even have penetrative sex on the page. Valerius is an incubus. The sex should be fantastic, not just ok. I would love to see more of this universe, though.
angst 2/5
heat 2/5
story 2.5/5
POV single Valerius only
break up no
9 reviews
December 15, 2025
love the balance

The balance between the characters in this story is delicious. They really do come off as an equal partnership & that is just gold to me. I highly recommend this book! I highly recommend this series— different but each one charming!
Profile Image for Nikki Ruffino.
4 reviews
January 13, 2026
loved this!!

Absolutely loved the verbal sparring. This book was so much more than the title suggested. Their relationship grew through mutual understanding and respect, and it made the spicy scenes that much better. Definitely gonna read more from this author!
Displaying 1 - 9 of 9 reviews

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