Marked By the Bounty Hunter by Ava York

Running a bar on the edge of civilized space teaches you to spot danger. What it doesn’t teach you is how to resist a seven-foot alien warrior with predator’s eyes and a growl that makes my knees weak.
As a bartender on Nova’s Edge station, I thought I’d seen it all. Then a Vinduthi warrior walked into my bar, all rippling muscle and predator’s grace, and turned my world upside down.
Now I’m helping him investigate disappearing children while trying to ignore how his touch sets every nerve ending on fire. Tyrix says I’m his mate, says he’ll keep me safe, but I’ve never felt more in danger. Not from the conspiracy we’re uncovering, but from the way my heart races every time he growls my name.

They say a Vinduthi’s mate bond is forever. What they don’t tell you is how addictive forever can be.