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Reina Sully writes romance for readers who like their love stories dark, filthy, taboo, and a little unexpected. From forbidden relationships and unconventional dynamics to stories that gleefully wander past respectable boundaries, Reina writes fiction for readers who know exactly what they came looking for.

Expect explicit romance, complicated characters, questionable decisions, unexpected humor, and happily-ever-afters earned the hard way.

Forbidden stories. Broken boundaries. No apologies.

Find more of what you are looking for on reinasully.com

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Caleb and Cooper have been switching places for as long as they can remember. Classes. Dates. Obligations. Being identical twins has always made deception easy. But when Caleb sends his identical twin to take his place with Lucian, their oldest game becomes something far more dangerous. Cooper is supposed to survive one night, follow Caleb's instructions, and walk away. Instead, he discovers why his brother keeps going back—and why surrender can become addictive.

What begins as a substitution becomes a competition neither twin is willing to abandon. Jealousy turns into curiosity. Curiosity turns into want. And when Lucian finally realizes the man in front of him has not always been the same man, the twins learn that deceiving someone who pays very close attention has consequences.

Caleb and Cooper have spent their whole lives proving they can become each other.

Lucian intends to prove he can tell them apart.

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The Substitution Game

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