London: 53-year-old singer Madonna believes "love" and happiness are the key ingredients to stay young.

The pop diva, who is currently dating 24-year-old dancer Brahim Zaibat, does not believe she has a "secret" of looking youthful but credits strong relationships as one of the factors.

Speaking at the Britain premiere of her new movie "W.E." at the Odeon Kensington Wednseday, she said: "What's my secret? Love. I don't know. I don't have a secret. The most important thing is being happy."