Treasured By the Hunter by Lynnea Lee

ABBY
Years after the end of the world, my life is falling apart again. This time, I know exactly how to survive in the bugpocalypse. What I don’t know is what to do with the brawny purple alien following me around.
Harb’k isn’t just big and strong, with a protective streak a mile wide, but he’s funny as hell too. I agree to partner up with him at least until I get to my destination, a settlement called Sanctuary. But before we get there, we come across something that could make or break humanity’s future.
Will we be able to contain the threat? Even if we do, will Harb’k still want me if he finds out my secret?

HARB’K
Almost every hunter in my group found his mate but me. Desperate to get away from all the love in the air, I volunteer to scour the region for signs that the scourge—the abominations that brought us to Earth—are evolving. Instead, I discover a lone female navigating the ravaged landscape with enemies at her back.
I convince Abby to travel with me. She doesn’t know it yet, but she is my mate, and the mate bond is never wrong.
I will move planets for her, but first, I must save this one. Can I convince her to love me before a deadly mutagen destroys everything?