Demon for All Time — Cynthia Sax

Hadrian hasn't dated in centuries. Fortunately for him, bad boys never go out of style.

Hadrian, a powerful ancient demon, is in a bit of a dry spell. He hasn't felt lust in centuries, and he can't remember the last time he had sex. Then he meets Claudia, a demon so powerless she's almost human, and his interest in all things sexual reemerges with a vengeance.

She desires wooing. He brings her flowers. She wants him to chase her. He does... literally tracking her through the city streets. And when he catches her, he shows his modern female the benefits of taking a savage, primitive lover. With ancient demons, sex really does get better with age.