“How can you try to disprove something when it’s standing right there in front of you?”

The Duality Principle

The Duality Principle

Sometimes A + B = O. Yes. Oh, yes. Just like that.

Gabriella Evans’s life exists in terms of logic and definitions. She’s holed up in Portland, Maine, for the summer to work on her PhD thesis, but something is screwing up her concentration: the rumble of a motorcycle every time the embodiment of her rough-and-tumble fantasies rides down her street.

When her best friend talks her into a blind date, she finds herself out with the opposite of her fantasy. He’s polite and well-mannered, yet something behind his crisply tailored shirt doesn’t add up—a rebellious gleam in his eye that piques her curiosity.

Orphaned at fifteen, Connor Starks has finally put the years of failing grades, breaking laws and breaking hearts behind him. The only holdover? His penchant for getting down and dirty in public places. But Gabriella makes him want to prove he’s become a better man.

Nothing intrigues Gabriella more than a problem she can’t solve. But the more Connor tries to bury his past, the more determined she is to uncover it. And what she finds makes all her trusty logic begin to fail her…

Warning: This book contains a summer romance, dirty talk, dockside kissing, motorcycles and tattoos. Features a rebellious nerdy girl with an appetite for outdoor sex and light spanking, and a bad boy who’s turned good…or at least he’s trying.

Best Selling Top 100 in Romantic Erotica

Available on KU


Allen’s debut is an utterly charming, delightfully dirty little tale that shouldn’t be missed. Her engagement with her brainy heroine’s secrets is beautifully honest and the addition of a troubled, refreshingly earnest bad boy makes this a memorable read.

— RT Book Reviews

Hot and spicy, this romance was written for all of those readers who like both the good—and the very bad.

— Library Journal

In The Duality Principle, Rebecca Grace Allen introduces us to one of the sweetest reformed rakes ever.

— Heroes and Heartbreakers

The Duality Principle is an exceptional debut with a scorching combination of smart meets sexy.

— Tara Sue Me, NY Times bestselling author of The Submissive Series

A gorgeous, sexy debut from Allen…hits all the right super emotional notes.

— Charlotte Stein

Scorching hot sexual tension that sizzles through the pages…Recommended for those who love stories featuring sexy as sin, reformed bad boys who just can’t help but be bad with the right woman!

— Maldivian Book Reviewer

There’s sexual chemistry, that’s for sure (and fantastic). But there’s also an emotional chemistry that just really made me fall completely in love with these two and their story.

— Amazon review

4.5 Fabulous Stars!!!!!!!!!

— Mia's Point of View

A hot, steamy and intoxicating read!

— Goodreads review

Gabriella and Connor are hard to resist–and an absolutely perfect blend of naughty and nice…The Duality Principle is a brilliant play of romance.

— Amazon review

I love how sweet and considerate Connor is when all Gabby wants is to get down and dirty. A very fun read!

— Lily Maxton

A really fun read with some drama to keep things interesting and incredibly sexy sexy-times.

— We So Nerdy

Other Books in the The Portland Rebels Series

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The Theory of Deviance

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Deviance is unacceptable. It’s taboo. And it’s the one thing he’s always wanted. Painful shyness isn’t the only reason Mikey Pelletier is a twenty-five-year-old virgin. Between working for his parents and volunteering at his church... Read More

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Facing his demons could unlock heaven…or damn his lovers to hell. After a week of pure deviance in Maine, Rafe, Krissy, and Mikey committed to giving this crazy triad thing a shot. Rafe has fallen harder than he ever... Read More

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The Spectrum of Desire

#Badboy #GoodGirl #ProposalStory

She’s all he craves. But craving sometimes comes at a cost… Connor Starks is ready to propose. Ever since he fell for Gabriella Evans, the brainy, sexy mathematician who came into his world last summer, she's been... Read More

Portland Rebels: The Complete Collection

An unlikely group of friends, all outcasts in their own right, find their perfect matches. But their battles with what others expect of them, and who they want to be, could ruin their chances for finding love. If you like... Read More




Recipe for a Reformed Bad Boy
Portland Rebels
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