The 51-year-old Love Don't Cost a Thing singer looked worried and concerned when she hit the gym on Wednesday, just hours after Radar exclusively reported that Affleck's home intruder was still on the loose.
Getting out of her SUV to head into her sweaty workout session, J Lo breezed by photographers but couldn't hide the distress on her face.
Flaunting her hourglass curves in gray spandex pants, the Hustlers actress teased everyone with her six-pack while sporting a cropped mint green sweater.
Accessorizing with oversized sunglasses, J Lo appeared stoic ahead of her workout.
Holding her cell phone tightly in the hand that used to occupy her gigantic diamond ring from Alex Rodriguez, the star kept it moving despite Affleck's scary ordeal.
The Justice League actor was the target of a home intruder earlier this week.
Radar has exclusively learned there have been no arrests made after a trespasser scaled the gate of the Oscar winner's $20 million Los Angeles home on Tuesday.
The Los Angeles Police Department tells Radar, they are still on the hunt for the suspect and are looking for a black male.
LAPD revealed exclusively to us that despite the suspect fleeing the scene on his bike, he quickly ditched the two-wheeler and ran on foot.
In brand-new photos showing police arriving at the scene, authorities were seen recovering the bike.
Radar is told the matter is "still under investigation" with no one in custody.
It does not appear that Ben Affleck was home at the time.
He was photographed later driving up to the scene in his Range Rover and speaking with police. We're told authorities took a trespass investigative report.
Affleck's trespasser decided to strike just days after the actor returned home from a trip to Montana with J Lo.
Despite their weekend away, the rumored couple are now thousands of miles apart.
J Lo landed back in Miami earlier this week and was the gym she used to frequent with A-Rod.