Guarded By an Alien Assassin by Honey Phillips

When Julie’s past comes back to haunt her, she finds an unexpected savior in the form of a towering, blue-skinned alien with a fierce scowl and muscles for days.
She should be terrified. Instead she wants to get closer – much closer – to the brooding warrior, and not just because of the safety he promises.
Q’tar’s mission is simple: eliminate his target and get the hell off of Earth. His bodyguard role is only temporary – until he’s ordered to protect a tiny, adorable female.
Now all he wants is Julie – in his arms and in his bed. Forever. He’s finally found the mate he never thought he’d have, but can he keep her? Or will the truth of his identity destroy their chance at happiness?