I found "Out of Time" by Monique Martin through an amazon sale mail, and I'm so happy I picked it up! It is currently on sale and I highly recommend it. To see more reviews, and my own, visit the book on goodreads.
Elizabeth and Simon are student and Professor studying the occult. One day Elizabeth drops of some graded papers at his house and they are transported back in time to the 1920s. There they must learn to blend into a society far different than their own. The learn quickly to act as if married, find a job working in a speak-easy and that admitting their feelings for one another could save them both. Simon is a closed off older man who has loved Elizabeth from a far for a long time, his self worth has kept him from reaching out to her for years and only their close quarters and her stubborn heart can get him to open up and admit his feelings.
Romance is the main heart of this story and it is extremely well written. The characters already have feelings for one another when the book begins so there is virtually no insta-romance syndrome. The paranormal and time-travel themes are sprinkled throughout the story giving the reader enough of the topics to satisfy their appetite but not overwhelm the main attractions in the story; the character development.
The writing was beautiful, well worded, easy to read style without making a high level reader feel board. There were very few typos and no repeated conversations used to lengthen the page count.