Ben Affleck has shed light on his co-parenting relationship with ex-wife Jennifer Garner. The 54-year-old Oscar-winning screenwriter – who admitted to trash talking on Fortnite – shares Violet, 20, Fin, 17, and Sam, 14, with the actress, also 54.Speaking with Willie Geist in an interview for Sunday TODAY, he said, ‘Their mom is spectacular, and always makes me feel like I’m coming up a little short.’He joked that he tells their brood, ‘I think I’m doing about 75% as good as your mom. And they’re like, “Maybe 40%.”‘He playfully added, ‘I’m maxing out. B+,’ and later shared, ‘I think the most important thing is, you know, having that mutual respect [for the co-parent]… being able to get along with that person.’Affleck and Garner were married from 2005 until their separation in 2015, and their divorce was finalized in 2018. Ben Affleck is giving a glimpse at his co-parenting relationship with ex-wife Jennifer Garner; pictured October 1 Affleck and Garner were married from 2005 until their separation in 2015, and their divorce was finalized in 2018; pictured in 2014The Boston native was married to Jennifer Lopez, 57, from 2022 to 2024 – after they previously called off their engagement in 2004.In September, Affleck revealed his kids refuse to take relationship advice from him after his two failed marriages. While appearing on Jimmy Kimmel Live, the actor said he sometimes tries to impart wisdom to his children – to which they respond with snark.The father of three shared: ‘I’ll say, “You know, well the thing about that relationship there…” and the 17-year-old turns to me and goes, “Oh, like you’re the expert on relationships?”‘He explained to Kimmel: ‘I give advice and try to talk to them, parent them as you do. What I found is that now it’s not only one teenager rolling their eyes.’I’ll kind of launch into something at the dinner table and I’ll catch them giving each other looks and I realize I’m the caricature in this story.’The movie star and Alias alum have a joint custody arrangement in which they spend one week on, one week off with their kids.Chatting with Variety last week, he divulged, ‘I work hard, and then I go home and pick up the kids from school. We have dinner if they agree to hang out with me. They’re with me for a week, then with their mom for a week.’ The 54-year-old Oscar-winning screenwriter shares Violet, 20, Fin, 17, and Sam, 14, with the actress, also 54; pictured in November 2019 The Oscar-winning filmmaker was married to Jennifer Lopez, 57, from 2022 to 2024 – after they previously called off their engagement in 2004Affleck recently explained why he cast ex-wife Garner as his love interest in his Netflix crime/thriller Animals, but later recast her with Kerry Washington.’I thought, God, Jen Garner would be amazing for this role,’ he told Entertainment Weekly. ‘It also has the added benefit of, like, both of us will see our kids more because we do a week and a week and back and forth. I thought, well, we can coordinate our schedules around it.’In Animals, a mayoral candidate and his wife resort to extreme measures in a desperate bid to pay their son’s ransom, ‘revealing dark secrets they never intended to bring to light,’ according to IMDb. Affleck said he realized he and his ex would be acting out a rocky marriage onscreen, which might not look good, given their relationship history. ‘I talked to Jen, and she was like, “We don’t wanna do that. You just get baggage,”‘ he said.However, he added: ‘I would love to work with her, frankly. She’s fabulous, and we’re really good friends, and I’m profoundly grateful to her, and we have a great thing.’I still would wanna work with her in the future, but what you don’t wanna do is take the audience’s baggage and have it work against you, you know?’The exes are sometimes seen running errands with their children, demonstrating their amicable co-parenting relationship. They have also been known to spend holidays together post-divorce.