Beautiful Villain by Rebecca F. Kenney

A spicy, supernatural retelling of The Great Gatsby.
Daisy Finnegan is regaining her footing after breaking up with her possessive ex. When her cousin Nick persuades her to attend an extravagant party being thrown by a mysterious, wealthy newcomer, she's shocked to come face-to-face with Jay Gatsby, the boy she once loved and lost. Can Daisy and Jay find their way back to each other, or are Gatsby's secrets too much to overcome?