Sibling Rivalry

by Becca Vale

My twin brother and I have always competed for everything—grades, girls, the last protein bar in the pantry.

But somewhere between the late-night workouts and the constant one-upmanship, it feels like the game changed. I started to remember what it was like when we worked together instead of always trying to come out on top.

And then we crossed a line.

And then we did it again.

Now, even with a scoreboard we update on the daily, I’m not even sure what it is I’m supposed to be competing for anymore. Not when every touch feels like a dare, every look is a challenge, and the only kind of “winning” I care about anymore is winning him…

Genres: M M Romance

ebook

Published October 10, 2025

Reviews

[Elizabeth (semi-hiatus) · Rating 3 out of 5]

Overly-competitive twins realize they'd rather fuck than fight. I thought this one would have more rivalry and each one fighting to prove their dominance but unfortunately it was pretty blah and sweet overall.

[Freya · Rating 4 out of 5]

3.75⭐️ 3.75🌶️

📝 REVIEW & THOUGHTS:

Well, as always pretty hot read from BV. Although these two felt very young mentally 🤣 so silly and hyper competitive duo.

🏷️ TROPES & TAGS (possible spoilers):

Genre/subgenre: contemporary taboo romance
Pairing: MM
POV: 1st person, dual
Angst: low
Burn: fast
Vibe/mood: filthy
Pet names: baby
Characters’ ages: not mentioned, assume early 20s
HEA: yes
Book type: novella
Series structure: standalone

Twincest
They make everything into a competitive game
Bi-awakening / GFY

🌶️ SPICE & K!NKS (possible spoilers):

Strict top/bottom or versatile: characters are vers, but on page we only get top/bottom
Heat: 4 scenes, high heat
Dry humping
Jerking off
Bløwjobs
Rimming
Anāl sėx

⚠️ CONTENT WARNINGS (possible spoilers):

Dubcon: no
Noncon: mo
OM/OW: no, but in the beginning the MCs are competing to get a girl, although neither are truly interested in her
Breakup: no
Incēst

* Fyi about 🌶️ levels: I rate spice on a combination of quantity, quality, length, intensity and explicitness of the scenes. Kınks are listed separately and generally do not directly affect the steam level to keep it fair for non kınky books.

[Becca Vale]

Looking for taboo gay smut? Find this yummy m/m twincest novella on Smashwords!

[M's ☆~HEA~☆ · Rating 5 out of 5]

“You, uh, you gonna give me a chance to show you these skills?” “I… don’t know what you mean.” I lick my suddenly dry lips, barely able to hear the sound of my own voice over the rushing in my ears, heart thrumming fast enough in my chest to set off the shot clock. “Yeah, Zevvy. Pretty sure you do,” Zane murmurs. And then he fucking kisses me again.

These two are total idiots and I fell for them. They are so competeive but not in a nasty way. They turn every little thing into a point system including stupid things like who gets into the bathroom first🤦‍♀️😂 They are written really well to where you feel that they also love each other as brothers and have a beautiful bond and happy childhood memories.

“It takes a minute to get your hole ready for cock.”“And what,” He pants, “you’re gonna spend that minute petting it like a kitten?” ....“Here, kitty, kitty,” I whisper, leaning over his back and laughing—then nipping at his earlobe—when he grunts, cursing at me.

They have a "rivalry" over trying to convince a girl to date one of them but there is absolutely no OM/OW real drama/sex/anything of that nature. Just super hot twin fun with lovable competitive hot jock bros.

[Sara Husser · Rating 5 out of 5]

Brothers who compete at everything. This was a fun and sexy read. They start fighting and monkeying around..then they get hard and try to compete at who can make the other cum first 💦😏😉. Holy hell this was a sexy fast read 🔥🔥🥵🥵

[Kim B · Rating 5 out of 5]

super hot...super sweet too! Twin brothers compete in absolutely everything! And even have a white board where they keep track of who is "winning" the competition of life. Until a new female roommate sparks even more competition--and they both realize they might not be as into her as they think.

[K · Rating 4 out of 5]

These two take being competitive to a whole other level! While they were over the top with it to begin with one wrestling session turns into who can make the other 💦 first! 😂