Dragon Chains by Grace Goodwin

Dangerous. Tortured. Desperate. King Ryker of the Draquonir will make one last sacrifice to save his people and his kingdom before he loses control of the raging beast inside him. Dragon kind are dwindling, no longer able to hunt for their true mates in this contemporary, high-tech world.

Ryker must do something no dragon has ever done before; have a child with a human woman he has no desire to touch, a woman his dragon refuses to take as a mate. Arrangements have been made. A queen chosen. A loveless, chaste marriage of convenience. No passion. No dragonfire. Nothing but contracts and medical procedures to sire an heir. This is the only way his race will survive.

Katy Toure is tired of cleaning up her identical twin’s messes, but when her sister calls in a panic, unable to get to an important business meeting worth millions of dollars, Katy just can’t say no. All Katy has to do is walk out of her dead-end job, grab her sister’s passport, fly to Italy, pretend to be her sister for a few days, sign some contracts and take the vacation she’s always dreamed about.

No one will know she’s an imposter. No one ever knows.
But Katy has never tried to fool a dragon who scents his mate…