Katy Perry and John Mayer ''only see each other whenever it's convenient.''

The 'Dark Horse' hitmaker and her on-again, off-again beau were spotted spending time together at Disneyland in California on Monday (25.05.15), but they haven't officially rekindled their relationship again.

A source close to the 30-year-old singer told PEOPLE.com: ''They have spent time together, but it doesn't seem like they are back in a serious relationship. It seems they only see each other whenever it's convenient. They have spent time in L.A. when Katy has had a break from her tour. They hang out at Katy's house and have had a dinner date at Sunset Tower.''

The 'Roar' hitmaker first started dating the 37-year-old musician in summer 2012.

They split for almost a year in February 2014, but sparked rumours they were back together when they were spotted celebrating Katy's performance at the Super Bowl last February.

But an insider at the time: ''They actually buried the hatchet a while back, and they are friends. It's not a surprise they would see each other socially. She's focused on her career and making herself happy.''