The 26-year-old pop star broke their on-off relationship last month after checking out of the Los Angeles UCLA medical centre where she was having treatment for bipolar disorder.
Ghalib was seen driving into Spears’s gated property in Beverley Hills over the weekend, before they both emerged with Spears behind the wheel.
They returned to the mansion minutes later.
Spears’s parents reportedly disapproved of their daughter’s relationship with Ghalib, a former Birmingham resident.
Her father, Jamie Spears, was granted conservatorship of the star’s assets last month amid renewed fears for the singer’s mental health.
The pop star was previously paying Ghalib a comfortable wage as her personal assistant, chauffeur, defender and live-in companion, according to reports.
She also bought him a new Mercedes to drive her around in.