It looks like Shawn Mendes and Camila Cabello have broken up for the second time.

The 24-year-old Canadian singer and the 25-year-old Havana hitmaker got back together six weeks ago, but they’ve already broken up again, and this time it’s for good, according to The Sun.

“Shawn and Camila have a lot of history, and they tested the waters again after coming back into each other’s lives,” a source told the magazine. The two were last seen getting close at a Taylor Swift concert on May 26.

“But it was just a fling, and they’ve put an end to it now,” the source said. They realized that trying again was probably a bad idea. After all, things did end between them the first time for a reason.

The source said, “In reality, both of them know they aren’t right for each other romantically, and now they just want to move on.”