Gilded - New Rules Trilogy, #2

Everything has a price. Self-made millionaire Xavier Ashburne has never stopped fighting for control. Money and power gave him some, but there's still so much uncertainty neither can overcome. When his longtime lover and partner, Luther Cross, leaves on a trip to reconnect with his brother, Xavier is left to manage their business and household alone. He'd never realized how much he relied on his man-especially when it comes to their shared submissive, Alexander Tremaine.
As a reformed thief, Alexander came into Xavier's life in the most unconventional fashion, but before too long, stole his way into Xavier's heart. And now that he's there, Xavier needs the control he's won to keep him safe and happy. But when Xavier's past comes back to haunt them, all the riches in the world won't be enough. Money is worthless. Power merely existence painted in gold. Gilded.