Kiss of the Wild by H.E. Payton

Monica Patterson wasn’t planning to fall for a demigod. In fact, after a bad break up, she wasn’t supposed to be dating at all. She’d escaped her old life in Portland and head south for sunny skies and fewer cheating ex-fiancés, determined to find herself again.
There’s just one problem: Brann Bauer. With no desire to feel the loss of human companions with their short lifespans, Brann, ancient son of The Lady of the Beasts, has lived a mostly solitary existence for the last two thousand years. But fate, and maybe a meddling goddess or two, has other plans. And California has some surprises in store for the both of them.