This the the fifth book in the Blood Prince series by Jennifer Blackstream. It is a paranormal/fantasy version of the fairy tale Sleeping Beauty.
Aiyana is a princess under a curse and fell into a dream-state when she came of age to marry the dark god Saamal. He’s been trying to find a way to break the curse and bring her back to life but so far has been unable to reach her. With help, he’s able to enter her dream-state and tries to get her to fall in love with him and wake up to fulfill the prophecy. This isn’t as fast paced as the other books, but the story is well developed and a great read like all the previous ones. It’s another great book in this series.