On Tuesday, December 14, the 49-year-old actor claimed in an interview on The Howard Stern Show that he felt "trapped" while married to the 13 Going On 30 star.
Now, his current squeeze is reportedly furious with her man for breaking their agreement to leave their personal lives private during interviews.
"They both agreed that they wouldn't talk about their private lives in any depth after what happened last time they were together," an insider spilled. (The on-again pair previously broke off their engagement in 2004 after they were believed to have been overwhelmed by the massive amounts of public attention.)
"It was all carefully planned that they would do pix together but that's all," the source continued. "At events the press is told ‘no questions about JLO and Ben. Only questions about the film. Now he shot off his big mouth and dragged her into it.”
The insider also told the outlet that J.Lo is upset over Affleck's unfavorable comments about his ex because she has been putting in a lot of effort to blend each of their families since reuniting with the Argo star.
"Jen [Lopez] has been working really hard to build a relationship with Ben’s children," the source stated. "They are going to read the quotes from their dad trashing their mom." Garner, 49, is the mother of Affleck's three children: Violet, 16, Seraphina, 12 and Samuel, 9.
"Jen [Lopez] has also worked really hard to have a relationship with Jennifer [Garner]. Ben just blew that up too,” the insider said, adding that J.Lo "doesn't tolerate this sloppy sh*t. She is buttoned up. She has her sh*t together."
The Good Will Hunting actor has been catching major backlash for his nasty comments, including the claim that he would "probably still be drinking" if still married to Garner.
Affleck — who has been in and out of rehab with an alcohol addiction — also claimed that their troubled marriage was part of the reason he started drinking.
“I was like 'I can't leave 'cause of my kids, but I'm not happy, what do I do?' What I did was drink a bottle of scotch and fall asleep on the couch, which turned out not to be the solution."
As OK! previously reported, another source claimed the Alias actress "isn't particularly happy with Ben's wording on the subject of why they divorced," and that she feels his comments were altogether "disrespectful."