The Stowaway Bride

When Captain Jason Brandt saved Ashton Perry from drowning then married her, it wasn't for love, but to prevent trouble on board his ship. Ashton doesn't remember becoming his bride. Jason won't fill in the blanks of her sketchy memory because he plans to annul their marriage.
Because he charges her with nine months of indenture she believes he intends to make her his mistress. Ashton is furious, but Jason fines humor in the situation. As his secrets and lies are mounting she captures his heart, discovers the truth, and drives his guilt a little deeper.
In the end, rather than confess any wrongdoing Jason asks Ashton to marry him. When she says that she already has, Jason realizes that she knew the truth all along.