The show's protagonist, Luz Noceda is a 14-year-old who goes on a journey to another world to become a witch.
He said it has been years of "torture and humiliation and hiding my emotions but that has not stopped me from being a good human being who is constantly evolving".
This comes weeks after the 23-year-old ended her three-year-long relationship with 'The Suite Life of Zack and Cody' actor Cole Sprouse.
According to researchers, rates of skin cancer were higher among gay and bisexual men compared to heterosexual men but lower among bisexual women than heterosexual women.
Stenberg shared a picture of the corresponding shoot and cover story on Instagram and wrote, "OUT & PROUD..."
Twitter which updated its policies last week to fight abuse in an efficient way has come under fire for censoring LGBTQ terms like "bisexual" on its platform.