Blue Embers by Courtney Leigh

The Draak, an ancient race of dragon shapeshifters, have been the dominant species on Earth for centuries, but new threats are lurking to upset the delicate peace.

Following a rebel attack that nearly cost the Draak their leader, Killian Valentyne is tasked with tracking down those responsible. With the development of a new museum exhibit underway that Killian hopes will build a better understanding between humans and Draak, he’s stretched a bit thin.
Persephone Grant is a dedicated historian and the new curator for an exhibit funded by known Draak playboy, Killian Valentyne. She’s intelligent, mysterious, and exactly the kind of distraction Killian doesn’t need, but a connection to the rising conflicts might just put her in the middle of it all.
With Draak-killing weapons floating around in rebel hands and suspicions that an ancient enemy has made its way to Earth, having feelings for a human would only make things harder for Killian. He knows the pain of loss too well to get caught up in affections, especially with a war coming, but Persephone may prove to be a force all her own. One taste should have been enough to sate their urges.
…It should have been…