Melissa Marr's Ink Exchange
The second Wicked Lovely book centers on a friend of the protagonist from the first book, who gets entangled in the fairy world herself after getting a magical tattoo. Weirdly, I am POSITIVE I've read another book where a girl gets a magical fairy tattoo that gives a fairy power over her, but can't figure out which book it is! I need to be more descriptive in these reviews, clearly. Anyway, this one has more of the romance and intrigue, but is significantly darker. I liked this way this one wrapped up and probably will read the third in the series immediately. B+.