Chosen Mate by Juniper Hart

Forbidden love. Dragon royalty. An international conspiracy that threatens to ruin everything.

Keppler Parker was the least princely of the five dragon brothers, preferring the sun on his face to the shadow of the Hollows.Rather than ruling the world, he was more interested in a life of surfing and running his beachside restaurants and hotel.
Nothing fazed Keppler until the day he saw her, jogging in the park…
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Bryn Castillo was on a mission, one which was five millennia in the making. The key to success was remaining hidden from the Parker Princes. It was easy enough to do as long as she stayed on the Sunside of the earth to perform heists as she’d been doing for a decade. Her plan to avenge her family was progressing perfectly, until she was betrayed by her own team and caught the eye of Keppler Parker. From that moment on, her world was turned upside down, their love threatened at every turn because someone was a double agent…