A source told the Daily Mail: “[Garner] has been through it with the same man herself and although the circumstances were quite different… they both dealt with some of the same issues.”
Garner and Affleck split up in 2018, after which the 52-year-old actress began dating businessman John Miller. She may have moved on romantically from her ex-husband, but she sees Lopez as a source of stability in his life, and so wants to help save their marriage.
“Jen does not want Ben to pull the plug on this marriage because she really does care about JLo,” the aforementioned insider told the Daily Mail. They added that Garner “did go to his house to talk to him about this and to try and keep the two of them together.