Marriage on the Edge by Sandra Marton
The convenient wife
Gage Baron has made it on his own. He's wealthy, and his marriage seems successful, toountil Natalie leaves him.
Then Gage receives an invitation to his father's Texas estate; Jonas obviously has more on his mind than just his eighty-fifth birthday celebration. But the possibilty he might inherit Espada is less important to Gage than the opportunity to win back Natalie. Jonas will expect to see her, so Gage must ensure that his wife is back by his side, still married to himfor convenience's sake
Four brothers: bonded by inheritance, battling for love!