In a cover interview with British Vogue, English fashion model and actress Cara Delevingne talked candidly about her relationship with singer-songwriter St. Vincent.

The 23-year-old Delevingne told the magazine that she is “completely in love” with Annie Clark, known by her stage name St. Vincent.

“I'm completely in love,” she said. “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 added that her sexuality remains fluid.

“As a child I used gay as a bad word, as in, 'that's so gay.' All my friends did. [My parents] have been so, so supportive. I'm obviously in love, so if people want to say I'm gay, that's great. But we're all liquid – we change, we grow.”

The September issue of British Vogue hits newsstands on Thursday.