The 48-year-old Justice League star was photographed for the first time since leaving his girlfriend Jennifer Lopez in Miami following their steamy weekend rendezvous that they didn't hide from cameras.
Affleck looked relaxed and casual in jeans, a plaid shirt, and his baseball cap on Wednesday to gear up for daddy duty.
J Lo's main man was photographed grabbing one of his kids from his ex-wife's home.
Affleck rocked up in his black Mercedes and emerged looking calm and collected while walking up to Jen Garner's home.
The star walked passed nearby photographers who captured him walking out with one of his children.
Ben's been juggling his whirlwind couple life with J Lo and being a responsible dad to his two children with Garner -- daughters Violet, 15, and Seraphina, 12, and son Samuel, who is 9 years old.
Most recently, he's been spotted picking up Samuel from his swimming lessons not far from his ritzy Pacific Palaces home.
But Affleck isn't just getting quality time with his son amid his rekindled romance with J Lo.
The actor was also seen giving his oldest daughter driver's lessons before treating her to ice cream.
Over the weekend, Affleck and J Lo made headlines when they were photographed together at the singer's Miami home.
Despite her recent breakup with Alex Rodriguez, the Hustlers actress decided to parade around Affleck in her ex's stomping ground -- which included the gym she used to frequent with the ex-ball player.
Bennifer was coined when the couple debuted their relationship in 2003.
In November 2002, they got engaged but called it off two years later, just days before their big day.
As for her romance with A-Rod, they were engaged for two years before she called it quits in April following his cheating scandal with Southern Charm star Madison LeCroy.