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And he sounds pretty sure it's all his fault.

Kevin Smith's "big mouth" cost him his friendship with longtime collaborator Ben Affleck, the filmmaker told his fans earlier this week.

The guy who directed Affleck in comedies including "Dogma," "Chasing Amy" and "Mallrats" spilled the tea on Monday when someone tweeted, "Sometimes I wonder what really happened between Ben Affleck and Kevin Smith that made them not talk to each other."

Smith retweeted the curiosity with his own "guess."

"One of us has a big mouth and told too many candid stories that sometimes weren't his to tell, and the other one is Ben," he wrote.

If I had to guess? It's because one of us has a big mouth and told too many candid stories that sometimes weren't his to tell, and the other one is Ben. https://t.co/kwj82A20SJ @ThatKevinSmith

Affleck, who has gone on to become a revered director himself, took the lead in Smith's largely reviled "Jersey Girl" and also appeared in one of Smith's more successful comedies, "Jay and Silent Bob Strike Back." Smith also "Good Will Hunting," which earned Affleck and Matt Damon their first Oscar. The last time they worked together was when Affleck made a quick appearance in 2006 comedy "Clerks II."

Smith has made it very clear over the years that he is no longer tight with Affleck. In 2016, he told TMZ he hadn't spoken to Affleck in three years after. "Not in a way of like I'm mad at him, I just haven't seen him in three years," he explained. "Last time I saw him was the 'Argo' premiere, and last contact with him was when he got cast as Batman."

In 2014, Smith told Yahoo! at Comic-Con that he's "not f--king tight" with Affleck. "I have not been [close with him] in decades," he added, and explained he knew "old Ben."

"He's got a wife [Jennifer Garner] that don't care for me at all," he said. "And plus, honestly, he probably don't care for me at all anymore. He's a triple-A-list movie star and shit like that. If he's Jimmy Carter, I'm Billy Carter, to put it in '70s terms. And I'm not even related and shit."

Affleck and Garner have since divorced. Back in 2009, Smith spilled that she wasn't a fan of his, so perhaps that influenced Affleck in distancing himself from Silent Bob.

"Jennifer does not share the same sense of humor as me -- she did not like my jokes," Smith said, according to The New York Daily News. "I was picking on Ben Affleck making fun of him because I've known him for a really long time -- I was talking smack -- and Jennifer goes, 'You know, if you keep saying stuff about him, I'm going to kick your a–.' And she could -- I've seen 'Alias.' She has a real girly sense of humor and didn't understand that I was kidding."

Smith suffered a massive heart attack this past spring, and said that Affleck did not reach out to wish him well. While sharing that nugget, he reflected on regretting one particular instance of opening his "big mouth" to talk too candidly about Affleck.

While speaking at a 20th anniversary screening of "Chasing Amy" at the Los Angeles LGBT Film Festival in July of 2017, Smith shared what he thought was "an adorable story about the young Ben Affleck," who kissed co-star Jason Lee in the movie. However, it ended up sparking backlash against his former friend, instead. He recalled 24-year-old Affleck telling him, "A man kissing another man is the greatest acting challenge an actor can ever face. Now, I'm a serious actor."

"Westworld" star Evan Rachel Wood was appalled by the story, and tweeted (and deleted), "Try getting raped in a scene. Also, grow up Ben."

Smith admitted after his heart attack that Affleck has good reason not to speak to him anymore.