The Earl and the Executive by Kai Butler

An impoverished earl…
Tiral Oican has inherited his brother’s title, estate, and the tremendous debt his brother took out before his unexpected death. There is only one option to save the estate and all the people who are now depending on him: marry a rich heir who is willing to pay off the debt in exchange for Tiral’s title.
Now, scholarly Tiral must transform himself into a seductive fortune hunter. The only way he can see through the mess is by hiring a tutor in love. It’s too bad that Zev is so good at his job that Tiral is falling for him.

And a rich entrepreneur…
To protect his heart, Zev Laft has spent years fooling the ton into believing he’s no more than an entertaining flirtation. He just didn’t expect the ruse to work so well that the newest penniless earl to arrive on Lus for the season would assume him a demimonde and try to hire him to be his instructor in courtship.
Now one of richest men in the empire finds himself struggling to keep up the façade, when his own heart is being taken by a man he has no intention of marrying.