Spellbound By the Sea Lord by Starla Night

Warrior. Healer. Savior. Spy.
Mer warlord Balim, the sarcastic healer of besieged rebel city Atlantis, has finally found his soul mate.
To his horror.
Bella’s fierce red hair teases his fingertips, velvet-encased curves entice his eyes, and intricately patterned freckles make him crave more than a taste of the skillfully charming single mother. She awakens his most dangerous desires.
Bella has a knack for outrunning trouble, but lately, trouble’s been catching up. She can’t stop herself from responding to the hard-muscled warrior, even though her secrets might get them killed.
What she doesn’t realize?
His secrets might kill them first.