The 23-year-old model "Paper Towns" said she is smitten with the 33-year-old singer songwriter and has admitted she couldn't be happier, reported Femalefirst.
"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," Delevingne said.
The actress termed her sexuality as "liquid" and said being called gay doesn't bother her.