Katy Perry is apparently wishing Chris Brown would be the one that got away from Rihanna.

Katy and Rihanna used to be besties, but they're no longer close because Katy doesn't think Rihanna should be back together with Chris, according to Us Weekly.

"They aren't tight anymore because Katy doesn't approve of Rihanna dating Chris Brown," says a source.

The rift between Katy and Rihanna became evident after this year's Grammys awards, when they stayed apart from each other. That is in stark contrast to last year's Grammys, when Katy and Rihanna were inseparable.

We're hoping Katy and Rihanna can find a way to patch things up one of these days. We love it when our favorite pop stars bond!

Source: Us Weekly