Save Me by Tia Louise

Jessa Steele shoots to kill.
She does not fall in love.
She does not get captured.
Mason “Mace” Moscaretti can retrieve the worst of the worst.
No capo or drug lord is too clever to escape him.

When he meets Jessa embedded deep with a Colombian target, he’s determined to capture her heart and walk away from active duty.
And he does.
Six years later, Jessa and Mace are happily married, burning up the bedroom, and ready to start making babies when a job arises Jessa can’t resist. What she doesn’t know is this client won’t stop until they’re both dead.