Seven months after they first broke up, America's best-matched couple, John Mayer and Katy Perry, have again called it quits. According to US Weekly, the two, who have dated since last summer, split because of issues over their schedules. But don't worry! There's hope they might get back together, according to the magazine's surely reliable sources.

"It's sad," one pal tells Us, but cautions that it might not be a permanent break. "It's not over until it's over. You have to see how things play out." Adds another source: "She's leaving the window open. They have both been so focused on work."

The pair graced us with many memorable moments like...well, they went to Obama's second inauguration together, which was nice.

They'd also recently considered adopting a cat together:

But there were signs earlier this week that things weren't so great in the Perry household. Of course, they were made up, astrology-based signs but still.

Let's hope this leads to a "Dear John, Part 2" collaboration between Perry and one of Mayer's other exes.

[Vulture/US Weekly/Image via Getty]