Elliot Page reveals secret relationship with Kate Mara while she was dating Max Minghella.
Page details their romance during the filming of X-Men: Days of Future Past.
Kate Mara was "in love with two people" at the time.
Kate and Max Minghella broke up in 2014; she is now married to Jamie Bell.
Page describes a pattern of falling for unavailable people in his life.
Elliot and Kate played a couple in the movie My Days of Mercy.
Kate has read Page's memoir and will join him for a book event in LA.
Elliot came out as transgender in 2020 but felt like a boy from a young age.
Elliot recalls a transformative experience in a gay bar before the premiere of Juno.
The bar helped him confront feelings of shame and find joy.
Elliot's memoir will be published on June 6, and he will embark on an international book tour.