Kayleb by Starr Huntress, Kate Rudolph

Unmated Detyens die at thirty, so why is Kayleb NaMoren still alive?
He came to Earth to find his mate, but on the eve of Kayleb’s birthday, he knows that time is up. Heartfelt goodbyes and one final night with his brother are all he has left… until he wakes up the next morning, alive and unmated. Or so he thinks.
An injury on his journey to Earth has left him with gaps in his memory, but he couldn’t ever forget his denya. Could he?

She’s escaped from pirates and is running out of time…
Tessa Greely didn’t leave her position as a medic on a space ship willingly. Sure, she wanted a change of scenery after a disastrous relationship, but captured by pirates to be sold into slavery was not her idea of a fun vacation. There’s only one person she wants to see less than the pirates who are hunting her down: Kayleb NaMoren.
Only problem? He might be the only guy who can keep her alive.

A second chance at a first impression…
He doesn’t remember her, but he’ll do anything to save her. She wants him gone, but she can’t run forever. Together, they just might find that they’re all each other need.