Jane Seymour shares friendly kiss with hunky young musician -- who's not her boyfriend!

It's getting hot in here!

Jane Seymour stepped out for the Open Hearts Foundation's 2018 Young Hearts Spring Event in Malibu, Calif., on Sunday, and she shared a steamy moment with a hunky young musician who is definitely not her boyfriend.

The 67-year-old former "Dr. Quinn, Medicine Woman" actress was photographed locking lips with Irish musician Keith Harkin, 31, on the red carpet ahead of the event while wearing a light pink floral mini dress and matching pashmina. 

Though the gesture definitely turned heads online, the kiss appeared to be thoroughly platonic, as Seymour attended the event with her boyfriend of four years, director David Green. Additionally, Harkin appears to be happily married himself, and he appeared at the Open Hearts affair with his wife, Kelsey.

See photos of Jane at the event:

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Jane Seymour out and about
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Jane Seymour out and about
MALIBU, CA - MAY 06: Musician Keith Harkin (L) and actress Jane Seymour attend The Open Hearts Foundation's 2018 Young Hearts Spring Event honoring Alliance of Moms and Shelift on May 6, 2018 in Malibu, California. (Photo by Amanda Edwards/Getty Images)
MALIBU, CA - MAY 06: Actress Jane Seymour (R) and director David Green attend The Open Hearts Foundation's 2018 Young Hearts Spring Event honoring Alliance of Moms and Shelift on May 6, 2018 in Malibu, California. (Photo by Amanda Edwards/Getty Images)
MALIBU, CA - MAY 06: Actress Jane Seymour attends The Open Hearts Foundation's 2018 Young Hearts Spring Event honoring Alliance of Moms and Shelift on May 6, 2018 in Malibu, California. (Photo by Amanda Edwards/Getty Images)
BEVERLY HILLS, CA - APRIL 17: Jane Seymour attends The Colleagues And Oscar de la Renta's Annual Spring Luncheon at the Beverly Wilshire Four Seasons Hotel on April 17, 2018 in Beverly Hills, California. (Photo by Jon Kopaloff/Getty Images,)
NEW YORK, NY - APRIL 23: Jane Seymour attends the screeing of 'Oversharing' at Tribeca TV: Indie Pilots during the 2018 Tribeca Film Festival at Cinepolis Chelsea on April 23, 2018 in New York City. (Photo by Dia Dipasupil/Getty Images for Tribeca Film Festival)
LONDON, ENGLAND - MARCH 28: Jane Seymour attends the National Film Awards UK at Portchester House on March 28, 2018 in London, England. (Photo by Mike Marsland/Mike Marsland/WireImage)
WEST HOLLYWOOD, CA - MARCH 04: Jane Seymour attends the 26th annual Elton John AIDS Foundation's Academy Awards Viewing Party at The City of West Hollywood Park on March 4, 2018 in West Hollywood, California. (Photo by Rodin Eckenroth/Getty Images)
LOS ANGELES, CA - MARCH 02: Jane Seymour attends the GREAT British Film Reception honoring the British nominees of The 90th Annual Academy Awards at The British Residence on March 2, 2018 in Los Angeles, California. (Photo by David M. Benett/Dave Benett/Getty Images)
HOLLYWOOD, CA - FEBRUARY 21: Actress Jane Seymour attends TheWrap's 2018 'Women, Whiskey And Wisdom' event celebrating women Oscar nominees at Teddy's at The Hollywood Rooselvelt Hotel on February 21, 2018 in Hollywood, California. (Photo by Paul Archuleta/FilmMagic)
LOS ANGELES, CA - FEBRUARY 25: Jane Seymour attends the 4th Hollywood Beauty Awards at Avalon Hollywood on February 25, 2018 in Los Angeles, California. (Photo by Phillip Faraone/FilmMagic)
Jane Seymour attends The Hollywood Reporter 6th Annual Nominees Night, in Beverly Hills, California on February 5, 2018. / AFP PHOTO / Jean-Baptiste LACROIX (Photo credit should read JEAN-BAPTISTE LACROIX/AFP/Getty Images)
UNIVERSAL CITY, CA - JANUARY 30: Actress Jane Seymour visits Hallmark's 'Home & Family' at Universal Studios Hollywood on January 30, 2018 in Universal City, California. (Photo by David Livingston/Getty Images)
NEW YORK, NY - JANUARY 23: Actress Jane Seymour is seen outside Aol Live on January 23, 2018 in New York City. (Photo by Raymond Hall/GC Images)
NEW YORK, NY - JANUARY 23: Actress Jane Seymour visits Build Series to discuss the TV comedy 'Let's Get Physical' at Build Studio on January 23, 2018 in New York City. (Photo by Gary Gershoff/WireImage)
NEW YORK, NY - JANUARY 22: Actress Jane Seymour is seen outside 'Good Morning America'on January 22, 2018 in New York City. (Photo by Raymond Hall/GC Images)
PASADENA, CA - JANUARY 14: Actor Jane Seymour of 'Let's Get Physical' speaks onstage during the POPTV portion of the 2018 Winter Television Critics Association Press Tour at The Langham Huntington, Pasadena on January 14, 2018 in Pasadena, California. (Photo by Frederick M. Brown/Getty Images)
BEVERLY HILLS, CA - DECEMBER 08: Actress Jane Seymour arrives for the Premiere Of 'And The Winner Isn't' at Laemmle Music Hall on December 8, 2017 in Beverly Hills, California. (Photo by Albert L. Ortega/Getty Images)
HOLLYWOOD, CA - DECEMBER 07: Actress Jane Seymour arrives at the premiere of 'Just Getting Started' at ArcLight Hollywood on December 7, 2017 in Hollywood, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
NEW YORK, NY - DECEMBER 05: (EXCLUSIVE COVERAGE) Actress Jane Seymour visits the SiriusXM studios on December 5, 2017 in New York City. (Photo by Astrid Stawiarz/Getty Images)
NEW YORK, NY - DECEMBER 04: Jane Seymour attends 'The Bloomberg 50' celebration at Gotham Hall on December 4, 2017 in New York City. (Photo by Jimi Celeste/Patrick McMullan via Getty Images)
MEGYN KELLY TODAY -- Pictured: Jane Seymour and Megyn Kelly on Monday, December 4, 2017 -- (Photo by: Nathan Congleton/NBC/NBCU Photo Bank via Getty Images)
NOVEMBER 4, 2017: MELBOURNE, VIC - (EUROPE AND AUSTRALASIA OUT) Actress Jane Seymour poses during a photo shoot in Melbourne, Victoria. (Photo by David Crosling/Newspix/Getty Images)
BEVERLY HILLS, CA - OCTOBER 21: Actress /Philanthropist Jane Seymour attends the 2017 Open Hearts Gala at SLS Hotel on October 21, 2017 in Beverly Hills, California. (Photo by Robin L Marshall/Getty Images)
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Earlier this year, Seymour got people talking when she decided to pose for Playboy at the age of 67. Though the photos weren't nude, the stunt still made headlines for the British star.

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