The "On The Floor" singer was seen riding in the passenger side of her convertible BMW as Smart drove. TMZ reports Lopez hid as soon as she noticed paparazzi following them.
The pair's sighting comes more than two months after they ended their two-year courtship. At the time, sources said the "relationship couldn't work with the distance" as both Lopez and Smart were focusing on advancing their careers. Days after their breakup was reported, news that Lopez was dating Dancing With The Stars veteran Maksim Chmerkovskiy arose. The two were last seen together at the singer's 45th birthday bash in Southampton.
It's still unknown if Casper and Lopez have reconciled.