Singer Katy Perry and John Mayer enjoyed a dinner date together over the weekend, sparking rumours that their romance could be on once again.

After separating in February last year, it was rumoured Perry was still dating super-producer Diplo. But now it appears she could be back with Mayer after they had dinner together at a friend's home in Beverly Hills here. Post that, Mayer even spent the night at Perry's home.

The pair turned up for dinner in separate cars, and a source told the Daily Mail newspaper that they were keen not to be seen with one another.

However, once the meal was over, they moved onto Perry's home where Mayer remained until 4 p.m. the following day.