Dirty Martini by Abby Knox

One of the most ruthless CEOs in Newcastle, Katie has made all of her dreams come true. Except one. She’s always fantasized of having a secret, “kept” man at her beck and call, but so far, nobody fits the bill. After conducting a tense business meeting in a dockside neighborhood primed for new development, she dips into a dive bar for her favorite drink, and ends up making her ultimate wish come true.
Holden doesn’t believe in true love, but he does believe taking advantage of an opportunity when one comes along. That opportunity comes in the form of a gorgeous older woman writing a check with more zeroes in it than he’s ever seen in his life. When the wrong people find out his dirty little secret — and his judgment gets clouded by obsession — it puts everything and everyone they both love in danger.