Billionaire's Marriage Bargain by Carole Mortimer
It broke Kenzie Masters's heart to turn her back on her marriage after nine months, realizing that her brooding husband would never give her what she truly wanted--a loving family. But now she needs to resurrect the facade of their marriage for a final time, knowing that her ruthless husband will drive a hard bargain in return....
No one makes a fool of Dominick Masters, and now that Kenzie's back, he intends to make her pay. If she wants to wear his ring again, he'll exact a most pleasurable revenge. Yet a temporary arrangement isn't really this billionaire's style. His demand: a more permanent deal from his estranged wife!