Actor Johnny Depp kisses actress Amber Heard as they attend the US premiere of "3 Days To Kill," at Arclight Cinemas, Feb. 12, 2014 in Hollywood, Calif.
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Elsa Pataky and Chris Hemsworth attend the world premiere of "Rush," Sept. 2, 2013, in London, England.
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Novak Djokovic kisses Jelena Ristic on the red carpet at the 64th Cannes Film Festival, May 17, 2011, in Cannes.
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Robert Downey Jr kisses his wife Susan on the red carpet as he arrives for the premiere of "Iron Man 3" in Leicester Square, April 18, 2013, in London.
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Bruce Willis and his wife Emma Willis show their affection on the red carpet at the "Die Hard" premiere Feb. 4, 2013, in Berlin, Germany.
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Kristen Bell and Dax Shepard arrive with a kiss at the 70th Annual Golden Globe Awards, Jan. 13, 2013, in Beverly Hills.
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George Clooney and former girlfriend Stacy Keibler nuzzle on the red carpet at the premiere of' "Argo" on Oct. 4, 2012, in Beverly Hills, Calif.
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David Hasselhoff kisses his girlfriend Hayley Roberts as they arrives for the premiere of his latest film "Keith Lemon: The Film" at London's Leicester Square, Aug. 20, 2012.
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Josh Brolin and Diane Lane kiss as they depart the Premiere of 'Wall Street: Money Never Sleeps' held at the Palais des Festivals during the 63rd Annual International Cannes Film Festival, May 2010, in Cannes, France.
Sharon Osbourne and husband Ozzy Osbourne smooch as they arrive at the "Total Recall" Premiere at Los Angeles' Grauman's Chinese Theater, Aug. 1, 2012.
Never shy, Melanie Griffith and Antonio Banderas show their affection for each other on the red carpet in New York City.
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Photographer Nigel Barker knows how to make wife Cristen Barker swoon, as they attend the premiere for his new series, "The Face," in New York City, Feb. 5, 2013.
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Actor Ben Falcone kisses wife Melissa McCarthy while posing on the red carpet for the premiere of her new film, "Identity Thief," in Los Angeles, Feb. 4, 2013.
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Even with six kids, the flame still burns between Angelina Jolie and Brad Pitt, seen here attending "The Tree Of Life" premiere at the Cannes Film Festival on May 16, 2011.
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Michael Douglas gives wife Catherine Zeta Jones a smooch after the Broadway opening of "A Little Night Music" in December, 2009.
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