Evander by Hazel Hunter

Two lost souls forge something beautiful from something broken.

Rachel Ingram is living the dream. Heiress to billions, she’s engaged to the perfect man. But with the sudden death of her parents, her world begins to crumble. When she discovers her new husband’s true nature, her life implodes.
Evander Talorc is living a nightmare. Traitor to his clan of immortal highlanders, he lives alone in a remote cottage. But it was not always that way. Once he had given up everything for the sake of his mortal lover. Then she died of the plague. But when he visits her grave at the center of the sacred grove, he encounters the unbelievable.
Abandoned and forgotten, Rachel and Evander find each other. But the rest of the world will not let them be.