The Remember Me actor, meanwhile, is engaged to singer FKA Twigs.
"I didn't talk about my first relationships that went public because I wanted things that are mine to be mine.
I hated it that details of my life were being turned into a commodity and peddled around the world.
A month after calling herself "so gay" on Saturday Night Live, Kristen Stewart opened up to London's Sunday Times about her sexuality and her high-profile relationship with her Twilight costar Robert Pattinson.
Robert Pattinson and Kristen Stewart arrive at the premiere of Summit Entertainment's "The Twilight Saga: Breaking Dawn - Part 1" at Nokia Theatre L. Live on November 14, 2011 in Los Angeles, California."I wasn't hiding anything," the Café Society actress, 26, told the newspaper for a story published on Sunday, March 5.
WATCH: Kristen Stewart Says She's 'In Love' With Girlfriend Alicia Cargile "I would never talk about any of my relationships before, but once I started dating girls it seemed like there was an opportunity to represent something really positive," she shares.