Matt Damon on Ben Affleck: 'He's great'

Ben Affleck and Jennifer Garner Wear Their Wedding Rings in Atlanta

LOS ANGELES (AP) -- Ben Affleck did not speak to reporters Monday at an event for his HBO series "Project Greenlight," but his longtime friend and collaborator Matt Damon said Affleck was doing "great."

"He's got a big smile on his face tonight," said Damon on the red carpet.

SEE ALSO: Are Ben Affleck and Jennifer Garner trying to make it work?

Affleck, who wore a ring on his left ring finger, posed for photos and signed autographs at the screening in downtown Los Angeles.

Photos of Matt Damon and Ben Affleck from over the years:

13 PHOTOS
Ben Affleck and Matt Damon through the years
See Gallery
Matt Damon on Ben Affleck: 'He's great'
LOS ANGELES, CA - MARCH 23: Oscar winners Matt Damon (L) and Ben Affleck hold the awards they won for best original screenplay for the film 'Good Will Hunting' which the two wrote during the 70th Annual Academy Awards 23 March in Los Angeles. (Photo credit should read HAL GARB/AFP/Getty Images)
LOS ANGELES - JULY 25: Actors Ben Affleck and Matt Damon talk at the afterparty for the premiere of Universal Picture's 'The Bourne Ultimatum' at the Hollywood Palladium on July 25, 2007 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 07: Actors Matt Damon (L) and Ben Affleck attend HBO Reveals Winner of 'Project Greenlight' Season 4 at BOULEVARD3 on November 7, 2014 in Los Angeles, California. (Photo by Frederick M. Brown/Getty Images)
BEVERLY HILLS, CA - MARCH 27: Honoree actor Matt Damon and actor Ben Affleck speak onstage during American Cinematheque 24th Annual Award Presentation To Matt Damon at The Beverly Hilton hotel on March 27, 2010 in Beverly Hills, California. (Photo by Kevork Djansezian/Getty Images)
JIMMY KIMMEL LIVE: AFTER THE OSCARS - The 11th annual 'Jimmy Kimmel Live: After The Oscars' special airs live on Oscar Sunday, February 28, after the late local news EST/CST and at 10pm PST on ABC. (Photo by Randy Holmes/ABC via Getty Images) MATT DAMON, BEN AFFLECK
JIMMY KIMMEL LIVE: AFTER THE OSCARS - The 11th annual 'Jimmy Kimmel Live: After The Oscars' special airs live on Oscar Sunday, February 28, after the late local news EST/CST and at 10pm PST on ABC. (Photo by Randy Holmes/ABC via Getty Images) MATT DAMON, BEN AFFLECK
CULVER CITY, CA - JUNE 04: Honorees Matt Damon (L) and Ben Affleck accept the Guys Of The Decade award onstage during Spike TV's 10th Annual Guys Choice Awards at Sony Pictures Studios on June 4, 2016 in Culver City, California. (Photo by Kevin Winter/Getty Images)
CULVER CITY, CA - JUNE 04: (L-R) Actors Robert De Niro, Matt Damon and Ben Affleck attend Spike TV's 10th Annual Guys Choice Awards at Sony Pictures Studios on June 4, 2016 in Culver City, California. (Photo by Mark Davis/Getty Images for Spike TV)
CULVER CITY, CA - JUNE 04: Honorees Ben Affleck (L) and Matt Damon accept the Guys of the Decade Award onstage during Spike TV's 10th Annual Guys Choice Awards at Sony Pictures Studios on June 4, 2016 in Culver City, California. (Photo by Mark Davis/Getty Images for Spike TV)
CULVER CITY, CA - JUNE 04: Actors Ben Affleck (L) and Matt Damon attend Spike TV's 10th Annual Guys Choice Awards at Sony Pictures Studios on June 4, 2016 in Culver City, California. (Photo by Frazer Harrison/Getty Images for Spike TV)
CULVER CITY, CA - JUNE 04: Actors Matt Damon (L) and Ben Affleck attend Spike TV's 10th Annual Guys Choice Awards at Sony Pictures Studios on June 4, 2016 in Culver City, California. (Photo by Frazer Harrison/Getty Images for Spike TV)
This guy. #NationalBestFriendsDay
HIDE CAPTION
SHOW CAPTION
of
SEE ALL
BACK TO SLIDE

Affleck and wife Jennifer Garner announced their plans to divorce in June after 10 years of marriage.

Damon and Affleck are executive producers on "Project Greenlight," which follows the journey of aspiring filmmakers. Season four premieres September 13.

Before heading into the event, Damon also offered Affleck well-wishes for his upcoming birthday on Aug. 15:

"I wish him well you know, but he's 43," he joked. "It's not 40. It's not 45. It's like 43. You know it's a forgettable birthday. I don't even remember my 43rd birthday."

​Photos of Ben Affleck and Jennifer Garner:

22 PHOTOS
Jennifer Garner and Ben Affleck
See Gallery
Matt Damon on Ben Affleck: 'He's great'
LOS ANGELES, CA - NOVEMBER 13: Jennifer Garner and Ben Affleck are seen on November 13, 2016 in Los Angeles, California. (Photo by BG004/Bauer-Griffin/GC Images)
LOS ANGELES, CA - MARCH 06: Jennifer Garner and Ben Affleck are seen on March 06, 2016 in Los Angeles, California. (Photo by Stone-e/Bauer-Griffin/GC Images)
LOS ANGELES, CA - OCTOBER 05: Jennifer Garner and Ben Affleck are seen on October 05, 2014 in Los Angeles, California. (Photo by GONZALO/Bauer-Griffin/GC Images)
LOS ANGELES, CA - OCTOBER 03: Ben Affleck and Jennifer Garner are seen on October 03, 2014 in Los Angeles, California. (Photo by GONZALO/Bauer-Griffin/GC Images)
WEST HOLLYWOOD, CA - MARCH 02: Actor/director Ben Affleck (L) and wife actress Jennifer Garner attend the 2014 Vanity Fair Oscar Party hosted by Graydon Carter on March 2, 2014 in West Hollywood, California. (Photo by David Livingston/Getty Images)
LOS ANGELES, CA - FEBRUARY 18: Ben Affleck and Jennifer Garner are seen holding hands on February 18, 2014 in Los Angeles, California. (Photo by Bauer-Griffin/GC Images)
LOS ANGELES, CA - FEBRUARY 06: Ben Affleck and Jennifer Garner are seen with their daughter, Seraphina Affleck on February 06, 2014 in Los Angeles, California. (Photo by GONZALO/Bauer-Griffin/GC Images)
LOS ANGELES, CA - JANUARY 18: Actors Jennifer Garner and Ben Affleck attend the 20th Annual Screen Actors Guild Awards at The Shrine Auditorium on January 18, 2014 in Los Angeles, California. (Photo by Christopher Polk/WireImage)
LOS ANGELES, CA - NOVEMBER 29: Ben Affleck and Jennifer Garner are seen on November 29, 2013 in Los Angeles, California. (Photo by Bauer-Griffin/GC Images)
LOS ANGELES, CA - November 07: Ben Affleck and Jennifer Garner are seen on November 07, 2013 in Los Angeles, California. (Photo by Bauer-Griffin/FilmMagic)
LOS ANGELES, CA - JULY 16: Ben Affleck and Jennifer Garner are seen on July 16, 2013 in Los Angeles, California. (Photo by Bauer-Griffin/GC Images)
SATURDAY NIGHT LIVE -- 'Ben Affleck' Episode 1641 -- Pictured: (l-r) Jennifer Garner and Ben Affleck during the monologue on May 18, 2013 -- (Photo by: Dana Edelson/NBC/NBCU Photo Bank via Getty Images)
LOS ANGELES, CA - MARCH 10: Actors Jennifer Garner (L) and Ben Affleck attend the John Varvatos 10th Annual Stuart House Benefit presented by Chrysler, Kids Tent by Hasbro Studios, at John Varvatos Los Angeles on March 10, 2013 in Los Angeles, California. (Photo by Donato Sardella/Getty Images for John Varvatos)
Argo director Ben Affleck kisses his wife actress Jennifer Garner after winning the Oscar for Best Movie at the 85th Annual Academy Awards on February 24, 2013 in Hollywood, California. AFP PHOTO/Robyn BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)
LONDON, ENGLAND - FEBRUARY 09: Ben Affleck (L) and Jennifer Garner attend the Charles Finch and Chanel Pre-BAFTA cocktail party and dinner at Annabel's on February 9, 2013 in London, England. (Photo by Dave M. Benett/Getty Images)
LOS ANGELES, CA - JANUARY 27: Ben Affleck and Jennifer Garner attend the 19th Annual Screen Actors Guild Awards at The Shrine Auditorium on January 27, 2013 in Los Angeles, California. (Photo by Kevin Mazur/WireImage) 23116_016_1209.jpg
LOS ANGELES, CA - NOVEMBER 30: Ben Affleck and Jennifer Garner are seen on November 30, 2012 in Los Angeles, California. (Photo by Bauer-Griffin/GC Images)
BEVERLY HILLS, CA - OCTOBER 05: Actors Ben Affleck and Jennifer Garner attend Variety's 4th Annual Power of Women Event Presented by Lifetime at the Beverly Wilshire Four Seasons Hotel on October 5, 2012 in Beverly Hills, California. (Photo by Amanda Edwards/WireImage)
BEVERLY HILLS, CA - OCTOBER 04: Actors Ben Affleck and Jennifer Garner arrive at the premiere of Warner Bros. Pictures' 'Argo' at AMPAS Samuel Goldwyn Theater on October 4, 2012 in Beverly Hills, California. (Photo by Jason Merritt/Getty Images)
TORONTO, ON - SEPTEMBER 07: Jennifer Garner and Ben Affleck attends 'Argo' Post Premiere Party - 2012 Toronto International Film Festival on September 7, 2012 in Toronto, Canada. (Photo by Sonia Recchia/Getty Images)
LOS ANGELES, CA - NOVEMBER 04: Ben Affleck and Jennifer Garner are seen on November 04, 2016 in Los Angeles, California. (Photo by BG004/Bauer-Griffin/GC Images)
HIDE CAPTION
SHOW CAPTION
of
SEE ALL
BACK TO SLIDE


More from AOL.com:

Read Full Story

Sign up for Entertainment Insider by AOL to get the hottest pop culture news delivered straight to your inbox!

Subscribe to our other newsletters

Emails may offer personalized content or ads. Learn more. You may unsubscribe any time.