Speaking about her their relationship just last month, Suicide Squad star Cara told Vogue: "I'm completely in love. Before, I didn't know what love was - real love. I didn't understand the depth of it. I always used to think it was you against the world."
"Now I know the meaning of life is love. Whether that's for yourself or for the world or your partner."
Meanwhile, Kristen had also insisted she was head over heels with on/off girlfriend, Alicia Cargile.
The Twilight star - who came out as bisexual in July - said: "I'm just really in love with my girlfriend. We've broken up a couple of times and gotten back together, and this time I was like: "'Finally, I can feel again.""