Hold on to the Nights (Dressed to Thrill #3)
Karen Foley

How should Lara break the news? Jump Graeme at a fan convention, of course...in costume! Her reward: the earthshaking sex she's been missing.
But Graeme instantly recognizes Lara's tantalizing touch. And he's got a secret, too. First, though, he's going to make his wife pay for their years apart... one shattering orgasm at a time....