Silent Lucidity (The Infinite City #1)

He's an alien assassin who has never known a female's touch-until hers.

Abella hasn't allowed four years of slavery to break her spirit, but after numerous failed escape attempts, the chances of making it home to her family seem bleak. That is until she shares a passionate, forbidden dance with a silent stranger. His piercing silvery eyes haunt her with a taste of hope.

Intense, mysterious, and deadly, Tenthil may be the key to Abella's freedom. But as she finds herself increasingly drawn to him, she realizes the truth-Tenthil has no intention of taking her home.
-----
Check author's website for detailed content warnings.