Ben Affleck celebrates National Best Friends Day with adorable pics of Matt Damon

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Affleck, Damon are Spike's 'Guys of the Decade'
Affleck, Damon are Spike's 'Guys of the Decade'

Ben Affleck celebrated his beloved bromance with Matt Damon on National Best Friends Day with some pretty epic flashback pics.

On Wednesday, the 43-year-old actor posted a photo collage from one of Damon's birthday celebrations that showed Affleck wearing a cake on his face. "This guy," Affleck captioned the sweet Instagram post.

View this post on Instagram

This guy. #NationalBestFriendsDay

A post shared by Ben Affleck (@benaffleck) on Jun 8, 2016 at 12:24pm PDT

The Batman v Superman star's tribute to his pal comes just a few days after the Good Will Hunting stars accepted the Guys of the Decade award at the 10th Spike TV Guy's Choice Awards in Culver City, California on Sunday night. "I think it goes without saying that this is an award Matt and I have been dreaming about since we were little boys," Affleck joked. "I did Gigli and Matt did that Liberace movie, and all of a sudden, it all seemed out of reach. Then I did [Batman v Superman] and all of a sudden, it was back in reach again."

Matt Damon and Ben Affleck's friendship through the years:

WATCH: Matt Damon Admits 'It Was Painful' Being Ben Affleck's Friend During Jennifer Lopez Romance

"Now we're the...coveted Dudes of the Decade...the Guys of the D**kheads?" the father-of-three further quipped.

"No, the D**kheads of the Decade Award. What is it called?" Damon, 45, added before getting it right. "It's the Guys of the Decade."

WATCH: Matt Damon Is Left Speechless After Ricky Gervais' Awkward Joke About Ben Affleck Being 'Unfaithful'

The actors concluded their time on the stage with a heartfelt thank you to the troops, who they also made time for during the event. An eyewitness tells ET that the actors were surrounded by service men and women throughout the night. Damon and Affleck sat by the troops during the show and were seen taking pictures and selfies during a commercial break.

Affleck is such a good friend that he snuck Damon onto the Jimmy Kimmel Live! set after the Oscars in February. Check out the hilarious moment:

WATCH: Matt Damon Pops Out of Ben Affleck's Coat, Crashes Jimmy Kimmel's Post-Oscars Special

Matt Damon Crashes Jimmy Kimmel's Post-Oscars Special
Matt Damon Crashes Jimmy Kimmel's Post-Oscars Special


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