Starcrossed — Brenda Hiatt

The Starstruck adventure continues… Marsha spent the first fifteen years of her life as a nerdy nobody before discovering her true identity as the long lost princess of a secret civilization. Now M is dodging extraterrestrial paparazzi while trying to keep the truth from her adoptive aunt and uncle and everyone at school. At least she can be herself with her boyfriend and literal soulmate, Rigel. Whenever they're together, it's easy to forget the responsibilities that will eventually come with her new status. But when a new boy arrives at Jewel High, everything M thought she knew about herself and her future is turned upside down. Now the very destiny that lifted her from obscurity threatens to tear her away from Rigel and their happy ever after. But when two planets conspire against you, where is there to run?