His Abducted Bride by Ruth Ann Nordin
All Sandy Davis wants is to forget about romance. Romance is for other people, not for her. She’s been rejected too many times and doesn’t want anything else to do with it. To escape, she writes an epic fantasy, picturing herself as the queen who rises against the threat of King Blackheart who is determined to conquer her kingdom.
Just as she’s going to write the ending where she kills him, he arranges it so that he takes her into the story. But he doesn’t abduct her so she’ll be his prisoner. His plan is to make her his wife and prove that he’s not the villain she’s made him out to be.