The Godfather's Secret Lover / Mr. Godfather, You've Got the Wrong Wife

Cate thought her romance with mafia heir Nick was a new beginning—until the night she planned to give him everything, only to find James in her bed instead. Ruthless, powerful. Overnight, her world shattered. At a party the next day, the truth hits hard: she slept with the man who rules the underworld—and her boyfriend's father.