He’s the royal spare with a reputation. She’s the cosmic wild card he never saw coming.

Prince Falkor Myka-Rullok has spent his entire life in second place—second to his brother, second to his planet, and probably second in his parents’ hearts. So why not lean into it? He’s got charm, status, and a reputation as Kaldor’s “Prince of Scandal.” If he can’t be their favorite, at least he can be unforgettable.

But his latest misadventure—where, for once, he’s actually innocent—lands him in hot water. To repair the damage, the king issues an ultimatum: marry the human woman caught in the middle of the mess… or else.

Karma Kennedy isn’t charmed. She came to Kaldor for a fresh start and spiritual clarity—not to marry an arrogant alien prince with perfect hair and a smirk she wants to wipe off his face. She doesn’t care that he’s royalty. She doesn’t care that he’s gorgeous. What she does care about is escaping this forced marriage and getting her life back.

The plan? Stay married just long enough to save face, then go their separate ways.

But fate isn’t letting go that easily.

As the days pass, Karma’s tarot cards start predicting a future she refuses to believe. And Falkor? He’s seeing a woman who might finally put him first.

In a marriage neither of them wanted, they might just find the love they’ve both been searching for… if they stop fighting destiny long enough to let it happen.

* * * *
Cosmic Mates sci-fi romances are released in “duets,” each two-book set is its own mini-series. Books one and two are a set, books three and four are a different mini-series, etc. All the books can be read as standalones.

Published
September 22, 2025
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Cosmic Mates

The series

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Not all soulmates are born on Earth. In Cosmic Mates, love is written in the stars—sometimes in alien script, sometimes in instinct—and always with consequences that ripple across galaxies. This series blends sizzling sci-fi romance with pulse-pounding adventure, bringing together interstellar warriors, unlikely heroines, and bonds that transcend planets, species, and logic.

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Each story orbits around a central spark: two beings from vastly different worlds navigating cultural clashes, language barriers, and the weight of destiny. But these aren’t just tales of otherworldly attraction—they’re layered, character-driven journeys where survival, sovereignty, and identity hang in the balance. The world-building is immersive without being overwhelming, striking a careful balance between futuristic tech and raw, emotional stakes.

The tone shifts between action-packed tension and deeply personal intimacy, exploring what it means to truly connect—whether through a forced proximity crash landing, a marriage of political necessity, or an instinctual alien claiming that rewrites both hearts and rules. If you’re drawn to slow-burn passion ignited in the vacuum of space, or fierce heroines who hold their ground even on foreign soil, this series delivers the perfect blend of heat, humor, and heart.

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10/10

This was the second book in this duet and while each book in the duet focuses on a different couple so it could be read as a standalone it's better to read both books in the set. I enjoyed getting to know both Falkor & Karma better in this story after getting to know them briefly in the previous book in this set and thought the epilogue was a sweet way of wrapping things up for both couples in this duet. I look forward to seeing what Cara Bristol comes out with next.

Cosmic Mates #07 - #08 Duet
Alien Heir (Cosmic Mates #07): Prince Jaryk & Kismet
Alien Spare (Cosmic Mates #08): Prince Falkor & Karma.

I received a free advanced reader copy of this book via Booksprout and am voluntarily leaving a review.

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