The Secret Billionaires Series by Dani Collins

For Billionaire playboy Sebastien, marriage was never an option. Until his mistress Monika gives him an ultimatum, and he risks losing everything…

The challenge: two weeks without your billionaire fortune! Greek magnate Stavros Xenakis must go undercover to win a bet--and escape his grandfather's demands that he take a bride. Until encountering deliciously tempting housekeeper Calli proves that a wife is exactly what he needs! Calli's baby being taken away robbed her of the ability to trust anyone. Now Stavros's offer to marry her gives her the chance to finally find her son... moreThe challenge: two weeks without your billionaire fortune! Greek magnate Stavros Xenakis must go undercover to win a bet--and escape his grandfather's demands that he take a bride. Until encountering deliciously tempting housekeeper Calli proves that a wife is exactly what he needs! Calli's baby being taken away robbed her of the ability to trust anyone. Now Stavros's offer to marry her gives her the chance to finally find her son. But Calli doesn't expect their honeymoon to be so sinfully sensual--and for life as the temporary Mrs. Xenakis to be so exquisitely satisfying... less