The actress also gushed to ET about having Joe Jonas' support at the 'Game of Thrones' season eight premiere.
The 'Game of Thrones' star and Jimmy Fallon had his audience thinking she'd dropped a major spoiler from the HBO hit's final season!
ET exclusively sat down with the 'Dark Phoenix' actress ahead of the film's June 7 release.
Turner also opened up about how she turned to therapy to deal with the identity crisis she faced with leaving 'Game of Thrones' behind.
The final season of the HBO series premieres on April 14.
ET spoke with Turner and Sheridan about their new movie, 'Dark Phoenix,' at WonderCon in Anaheim, California.
'He's the best onscreen boyfriend I've ever had,' Turner tells ET of 'Dark Phoenix' co-star Tye Sheridan.
Turner and her 'Game of Thrones' star, Maisie Williams, cover the latest issue of 'Rolling Stone.'
The 'Game of Thrones' actress is engaged to Joe Jonas.
The actress also opens up about living with her fiance, Joe Jonas.
They all took a boat ride together!
The 'Game of Thrones' actress was spotted showing off her best party moves during an outing with her fiance Joe Jonas.
The 'Game of Thrones' star knows how to have a fun time.
From New York City to Hollywood and everywhere in-between, see how the A-listers are living it up this month!
