Luke Perry reveals he hasn't talked to Shannen Doherty about her tragic cancer battle

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Luke Perry got candid about Shannen Doherty's heartbreaking breast cancer battle.

The actor revealed that he hasn't talked to Doherty, 45, about her diagnosis, but he did have some sweet words for his former "Beverly Hills, 90210" love interest.

"When it's good for Shannen, I'm sure we'll talk. She's brave, she's a fighter. She's in my heart and I think about it," Perry told Us Weekly. "Shannen has taken the opportunity to raise the awareness and let everybody know breast cancer is still a problem. I'll take this opportunity to send her my love."

30 PHOTOS
Shannen Doherty through the years
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Shannen Doherty through the years
WEST HOLLYWOOD, CA - APRIL 19: Actress Shannen Doherty attends Jennie Garth's 40th birthday celebration and premiere party for 'Jennie Garth: A Little Bit Country' at The London Hotel on April 19, 2012 in West Hollywood, California. (Photo by Angela Weiss/Getty Images)
LOS ANGELES, CA - FEBRUARY 13: Actress Shannen Doherty attends Shepherd Conservation Society's 2nd Annual 'World Love For Dolphins Day' at Japanese Consulate on February 13, 2015 in Los Angeles, California. (Photo by Joe Kohen/Getty Images)
PARIS, FRANCE - MARCH 13: (EXCLUSIVE COVERAGE) Actress Shannen Doherty arrives at Charles-de-Gaulle airport on March 13, 2014 in Paris, France. (Photo by Marc Piasecki/GC Images)
LOS ANGELES, CA - APRIL 09: Shannen Doherty is sighted at The Grove on April 9, 2012 in Los Angeles, California. (Photo by Noel Vasquez/FilmMagic)
WATCH WHAT HAPPENS LIVE -- Pictured: Shannen Doherty -- (Photo by: Peter Kramer/Bravo/NBCU Photo Bank via Getty Images)
LOS ANGELES, CA - MAY 10: Shannen Doherty attends STK Los Angeles' 3 Year Anniversary Party at STK on May 10, 2011 in Los Angeles, California. (Photo by Todd Williamson/WireImage)
LOS ANGELES, CA - DECEMBER 14: Shannen Doherty signs copies of her new book 'Badass' at Barnes & Noble bookstore at The Grove on December 14, 2010 in Los Angeles, California. (Photo by Jason LaVeris/FilmMagic)
Shannen Doherty arrives at the Los Angeles premiere of 'Burning Palms' held at ArcLight Cinemas on January 12, 2011 in Hollywood, California.
NEW YORK - NOVEMBER 02: Actress Shannen Doherty promotes 'Badass' at Borders Books & Music, Columbus Circle on November 2, 2010 in New York City. (Photo by Jason Kempin/Getty Images)
Shannen Doherty celebrates the grand opening of Bravada Women's Athletica at Bravada - Women's Athletica on June 17, 2010 in Los Angeles, California. (Photo by Jean Baptiste Lacroix/WireImage)
NEW YORK - APRIL 01: Dancer Mark Ballas (L) and television personality Shannen Doherty pose for photos in Midtown Manhattan on April 01, 2010 in New York City. (Photo by Ray Tamarra/Getty Images)
LOS ANGELES, CA - MARCH 27: Shannen Doherty attends Perez Hilton's 'Carn-Evil' Theatrical Freak and Funk 32nd birthday party at Paramount Studios on March 27, 2010 in Los Angeles, California. (Photo by Jean Baptiste Lacroix/WireImage)
LOS ANGELES, CA - MARCH 26: Shannen Doherty is seen on March 26, 2010 in Los Angeles, California. (Photo by Jean Baptiste Lacroix/WireImage)
LOS ANGELES, CA - JANUARY 16: Actress Shannen Doherty arrives at The Art of Elysium's 3rd Annual Black Tie Charity Gala 'Heaven' on January 16, 2010 in Los Angeles, California. (Photo by Jeffrey Mayer/WireImage)
LOS ANGELES, CA - DECEMBER 18: Actress Shannen Doherty arrives at Flaunt Magazine's 10th Anniversary Party and Annual Holiday Toy Drive at the Wayne Kao Mansion on December 18th, 2008 in Holmby Hills, CA. (Photo by Michael Bezjian/WireImage)
PASADENA, CA - JULY 11: Actress Shannen Doherty speaks during the 2006 Summer Television Critics Press Tour for the Oxygen Network at the Ritz Carlton Hotel July 11, 2006 in Pasadena, California. (Photo Frederick M. Brown/Getty Images)
NEW YORK - NOVEMBER 3: (ITALY OUT, NY DAILY NEWS OUT, NY NEWSDAY OUT) Actress Shannen Doherty attends the Fendi Flagship store opening November 3, 2005 in New York City. (Photo by Arnaldo Magnani/Getty Images)
Shannen Doherty during DKNY Jeans Presents Vanity Fair in Concert With a Live Performance by Alanis Morissette Benefiting Step Up Women's Network at Hiro Ballroom at The Maritime Hotel in New York City, New York, United States. (Photo by Jamie McCarthy/WireImage)
Shannen Doherty during Olympus Fashion Week Fall 2005 - Sweetface by Jennifer Lopez and Andy Hilfiger - Backstage Arrivals at The Tent, Bryant Park in New York City, New York, United States. (Photo by KMazur/WireImage)
Shannen Doherty at the HP Portrait Studio in Park City, Utah (Photo by Jeff Vespa/WireImage)
Shannen Doherty (Photo by Jeffrey Mayer/WireImage)
Shannen Doherty during The 56th Annual Primetime Emmy Awards - Fox After Party - Arrivals at Spago in Beverly Hills, California, United States. (Photo by J.Sciulli/WireImage for The jLINE Group, Inc.)
Shannen Doherty during World Premiere of 'S.W.A.T.' at Mann Village Theater in Westwood, California, United States. (Photo by Jon Kopaloff/FilmMagic)
Shannen Doherty (Photo by Ron Galella/WireImage)
Jason Priestley, Shannen Doherty and Luke Perry (Photo by Ron Galella/WireImage)
394962 09: ***EXCLUSIVE*** (Publicist Approval Required for ALL Usage) Actress Shannen Doherty poses for a portrait January 2001 in Los Angeles, CA. (Photo by Jeff Katz/Getty Images) (Clients must call or email Getty Images with EXACT frame number, client name, name/type of publication, date of intended publication and type of usage (cover, inside full page, etc) and WAIT for Getty Images to confirm publicist approval before allowing client to commit these images to use.)
Shannen Doherty, circa 1988. (Photo by Getty Images)
Actresses Shannen Doherty and Shalane McCall attend Starlight Foundation Benefit on September 22, 1988 at Ed Debevic's Restaurant in Beverly Hills, California.
LITTLE HOUSE ON THE PRAIRIE -- Season 9 -- Pictured: Shannen Doherty as Jenny Wilder (Photo by Frank Carroll/NBC/NBCU Photo Bank via Getty Images)
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The '90s heartthrob has also helped raise awareness in his own way. He became involved with the American Cancer Society and Fight Colorectal Cancer last year due to a close friend who is battling the disease.

And while the two haven't spoken, he honored his former costar during a mini cast reunion during Rewind Con back in November of last year.

"None of us are up here today without Shannen. She's been through a lot," he said at the time. "She's a very big part of the success of this show. She taught me a lot. I'm glad she was my scene partner."

Their on-screen characters, Dylan and Brenda, are considered one of the most memorable TV couples in history.

Recently, Doherty was spotted shopping in Venice, California, with her mother after revealing on Instagram that she just had her last day of chemotherapy.

12 PHOTOS
Notable people who have beaten cancer
See Gallery
Notable people who have beaten cancer
Musician Sheryl Crow arrives at the Vanity Fair Oscar Party in Beverly Hills, California February 28, 2016. REUTERS/Danny Moloshok
Sharon Osbourne poses at the 2014 MusiCares Person of the Year gala honoring Carole King in Los Angeles, January 24, 2014. The tribute will benefit MusiCares' emergency financial assistance and addiction recovery programs. REUTERS/Danny Moloshok (UNITED STATES - Tags: ENTERTAINMENT)
Mark Ruffalo, nominated for Best Supporting Actor for his role in "Spotlight", arrives at the 88th Academy Awards in Hollywood, California February 28, 2016. REUTERS/Adrees Latif
LOS ANGELES, CA - OCTOBER 01: Actor Hugh Jackman attends MPTF's 95th anniversary celebration 'Hollywood's Night Under The Stars' on October 1, 2016 in Los Angeles, California. (Photo by Jason LaVeris/FilmMagic)
Actress Christina Applegate poses at the UK Premiere of the film Anchorman 2 in Leicester Square, London, December 11, 2013. REUTERS/Andrew Winning (BRITAIN - Tags: ENTERTAINMENT)
Giuliana Rancic arrives at the 66th Primetime Emmy Awards in Los Angeles, California August 25, 2014. REUTERS/Lucy Nicholson (UNITED STATES -Tags: ENTERTAINMENT)(EMMYS-ARRIVALS)
Actor Michael C. Hall arrives at the 2011 Vanity Fair Oscar party in West Hollywood, California February 27, 2011. REUTERS/Danny Moloshok (UNITED STATES - Tags: ENTERTAINMENT) (OSCARS-PARTY)
Singer Kylie Minogue performs at the 25th Annual GLAAD Media Awards at the Waldorf Astoria in New York, May 3, 2014. REUTERS/Eduardo Munoz (UNITED STATES - Tags: ENTERTAINMENT)
FILE PHOTO -- Ben Stiller poses for photographers at the screening of Zoolander 2 at a cinema in central London, February 4, 2016. REUTERS/Dylan Martinez/File Photo
Actress Cynthia Nixon poses for a portrait during a media day to promote the film "Sex and the City 2" in New York May 17, 2010. REUTERS/Lucas Jackson (UNITED STATES - Tags: ENTERTAINMENT PROFILE)
Actress Edie Falco from the Showtime series "Nurse Jackie" arrives at the 21st annual Screen Actors Guild Awards in Los Angeles, California January 25, 2015. REUTERS/Mike Blake (UNITED STATES - Tags: ENTERTAINMENT) (SAGAWARDS-ARRIVALS)
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"Now that I'm done with chemo and radiation, the waiting game is here. Waiting for test. Waiting to see if I'm clear or not. Waiting for reconstruction. Waiting. I think when one gets cancer, they are always waiting to a certain extent. To those who know... I'm waiting with you. #cancerslayer," she captioned the snapshot.

The actress was diagnosed with the disease in 2015 and within a year it had spread to her lymphatic system. She's remained active on social media over the course of her treatments to keep fans informed.

Shannen has received an outpouring of support from friends and family, including her husband of six years, Kurt Iswarienko. The tragic diagnosis has made their relationship stronger than ever. She posted an old photo from their wedding day in late 2016 where she gushed that he is her "soul mate" and "other half."

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