AceShowbiz - Jennifer Lopez doesn't think Ben Affleck and Jennifer Garner's relationship is platonic. If a new report is to be believed, J.Lo is convinced that the former spouses would get back together amid her divorce from Ben.

"Seeing the photos of them looking more like a couple than a pair of exes was the final straw for J.Lo," a source tells In Touch. The insider adds that "it was the push she needed to finally file for divorce."

The informant additionally notes that J.Lo "kept hoping that she and Ben might work things out, but he put in zero effort to fix things and only seemed interested in spending time with Jen and his kids." The source continued, "It was horrible for J.Lo, because she's now left wondering if she was some sort of pawn that he used to try and win Jen back."

It's also said that the "Gone Girl" actor "was always raving about Jen" throughout his marriage to the "Jennie From the Block" hitmaker, "like she was some sort of saint."

The source adds, "J.Lo just had to accept it because he claimed there was nothing to be jealous of." The source continues, "But it was a huge issue in their short marriage because any time they had a fight he'd go running to Jen."

Ben, meanwhile, recently flew with Jennifer from California to Connecticut to see off their eldest, Violet, as she entered Yale. Upon catching wind of photos of the exes together at Violet's college drop off, "J.Lo is allegedly "fuming and feeling like a total fool, especially after seeing the photos of Jen and Ben together."

The informant notes, "The way they are looking at each other is proof in J. Lo's eyes that there's a lot more than just coparenting going on, she's now predicting they're going to get back together." The source adds, "It's so painful and humiliating, [J.Lo] feels beyond betrayed."