The 48-year-old Justice League star appeared to not have a care in the world while picking his 9-year-old son Samuel from swimming practice ahead of the weekend.
Keeping his pick-up look casual in a pair of black jeans, a hoodie, and a purple t-shirt, Affleck kept his mask on while brushing past photographers on Friday.
The star was seen bending down to greet his son -- who's long hair was soaking wet -- before safely guiding him to their awaiting SUV.
This is a complete 180 to less than one week ago when he picked Samuel up from practice.
As Radar reported, Ben Affleck was seen clutching his son tightly after swim lessons after news broke that his scary home intruder was still on the run.
While the trespasser has still not been caught, Affleck appeared unbothered while playing super dad after spending several days with J Lo.
After being photographed together in Montana earlier this month, the duo went their separate ways but remained in communication every day.
Their physical separation didn't last long.
According to PEOPLE, J Lo returned to Los Angeles earlier this week to reunite with Affleck.
"Jennifer was just in Los Angeles for a couple of days," a source told the outlet.
"It's a tricky situation since they live so far from each other, but they both seem committed to making things work," the insider added.
J Lo lives in Miami -- as does her ex-fiancé A-Rod -- while Ben's roots and kids are in L.A.
The Batman actor proceeded with caution as they walked past waiting shutterbugs ahead of the weekend, just days after a scary trespasser made his way onto the star's $20 million Los Angeles property.
As Radar exclusively reported, the Los Angeles Police Department's hunt for the trespasser is proving to be a hard case to crack.
That's because authorities are having trouble identifying him.