Wicked and Wild by Cynthia Eden

She was wicked… Everyone knew that Valerie Storm was the baddest bit—um, witch on the block. She might look like Snow White, but she had the heart of the wicked queen. She turned her enemies to ash, she danced on their graves, and she had to be stopped. But who could stand up to someone so wicked?
He was wild. Griffin Bastien was the most powerful shifter to ever walk the earth. His claws had sent plenty of his foes to the grave. Bloodlust burned fast and hard within him, and when his beast took over, there was no stopping him.
Then Wicked met Wild.

Neither of them believed in love. And neither of them ever expected the firestorm that ignited when they kissed. But some things—some people—can’t be controlled. The need that Valerie and Griffin feel for each other, the white-hot lust, will change their world.
Even hell doesn’t burn this hot.
Too bad that Griffin has been keeping secrets. Too bad that he is the original assassin sent to destroy Valerie. Because when she finds out the truth, there will be no greater fury than a wicked witch betrayed. Even the biggest, baddest beast might discover that he’s absolutely lost when a witch casts her spell, and he will be willing to do anything to reclaim the mate he never expected.

Buckle up, it’s gonna be a wild ride.