Kragen by Chloe Cox

Andromeda Knowles has always been a fighter. But when the ex who ruined her life and his drunken buddies confront her about working for the new Leonid-human Mating Service — the only job she’s been able to get after what her ex did to her — she knows she doesn’t stand a chance. Until a huge, powerful, sexy Leonid Dominant shows up and puts his life on the line to save her.
Kragen is everything Andie said she’d never touch: a criminal, an alien warrior, and too damn Dominant for her own good. But he’s also wounded, and Andie can’t bring herself to leave his side — or disobey his orders.

Which is good, because he’s not letting her go anywhere. Technically, he’s kidnapping her. Because he says they’re mates. Like actual, fated mates. And the more time Andie spends with Kragen, the more he gets under her skin—and her clothes. Andie sees a side of Kragen no one has ever seen before, and she starts to fall for the noble heart underneath Kragen’s rough, Dom exterior…

But when she discovers the secret that Kragen has locked up in his basement, Andie learns that her alien savior has a dark side — and that there’s a freaking reason he’s on the run from both the Leonids and the Earth Alliance. One thing is clear: Kragen is a rebel with no plans to change. And he will never allow anyone to take his mate—even if it means taking on the whole world.

But when the Alliance finds them and takes Andie prisoner, Kragen must decide: will he choose his cause, or his mate?