A source close to the former couple tells ET that the pair continues to have "so much love and respect for one another" nearly two years after their split, and that they're just as committed to co-parenting as ever.
"They have maintained such a strong and beautiful united front to stay lovely and classy towards each other for their kids," the source says. "They spend so much time working on their relationship -- whether it's a friendship or anything -- for their kids."
On Friday, Us Weekly reported that Garner is now gearing up to officially file for divorce from Affleck. No divorce papers have been filed since they announced their breakup, and our source tells ET that "not one thing has changed" since their split was announced.
"Their friendship is there," the source says. "They are so die-hard committed to co-parenting. Whatever form this relationship is, they'll always have love for each other, and the love they have for their kids is so strong, they won't let anything bring that down."
“They both have done things they're not proud of and in no way was Ben a shining husband, but there are a lot of things that go into a marriage and a split," the source continues. "They put together their plans and goals, in terms of their friendship and their relationship, and they're doing just that. Whatever this new normal that they created for their family is, they're doing it."
Garner was spotted leaving a nail salon in Los Angeles on Thursday, looking healthy and happy while walking out with a big smile on her face.
"They're so careful of how they act in front of the kids," our source notes, referring to 11-year-old Violet, 8-year-old Seraphina and 4-year-old Samuel. "Ben and Jen are fiercely protective of their children. They're very careful to make sure they keep their children away from it all.”
ET spoke to Affleck in October at the Los Angeles premiere of his film, The Accountant, when he got candid about co-parenting with Garner. "We do our best," the Oscar-winner said. "We try our best."