Katy Perry and John Mayer
National Photo Group; Bauer-Griffin
If not fireworks again, then maybe there's still a little spark between on-again, off-again couple Katy Perry
and John Mayer
The pair were spotted out Friday night – along with their approximately 15-person-strong entourage – at West Hollywood's Chateau Marmont.
The group was ushered into the far back corner of the tented patio and took their place at a cluster of tables, with servers and security keeping a watchful eye.
Mayer, 35, wearing a dark shirt under a grey fitted blazer, shook hands with everyone, while Perry, 28, looked stunning in a short-sleeved white 50's style cashmere sweater and a fitted metallic patterned shirt as she chatted with their pals.
They then sat separately at their large table for an evening that stretched past midnight.
In March, Perry and Mayer called it quits
after a second time around, with Mayer later saying
, "I'm on the same journey as everyone else. Coupling is a tricky thing."