Wager — H.E. Trent

After sixteen lonely years on Jekh, ex-soldier Jasper Escobar resorts to drastic measures to land one of the most sought-after women in Little Gitano. Access to the mysterious Sera Merridon comes at a steep price, because behind the scenes, solitary men like him bid huge sums of money for chances at romance.

Untrusting Sera has spent more than half her life being traded from one Terran space pirate to the next. When schoolteacher Marco Cipriani helped to liberate her from her traumatic existence as a space station courtesan, she wondered if perhaps not all of Earth's men are the same. Sensitive Marco chases her fears away, so of course she wants him to be her lover and companion.

If only he weren't so clueless.

He's nobly standing aside for the more aggressive Jasper, but after learning about the tasteless wager scheme, Sera's not inclined to play nice. That is, until Jasper reveals that he's just trying to belong to someone. He can belong to her. In fact, both men can.

Although romantic trios are the norm on Jekh, her two human men hadn't planned on sharing. And if they can't share her, not only will the men forfeit the companionship Sera desperately wants to give them, but on the friendship the extraordinary men need from each other as well.
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Also available in The Jekh Saga:

1 - Erstwhile
2 - Crux
3 - Salvo
5 - Royal