Rumors are swirling that John is ready to put a ring on it--and since Kanye proposed on Kim's birthday, John could do exactly the same for Katy since she turns 29 this Friday!
"Everyone knows it's just a question of when John will propose," a source says.
Katy has been talking a lot about her failed marriage to Russell Brand lately, which stands in stark contrast to the love she's found with John Mayer.
"I actually am dating my crush," she recently told W magazine. "I had a crush on him for a long time, and it just so happens we fit together great."
There is also a pretty lovey-dovey song on her upcoming album that is rumored to be about her main man!
We actually love these two together, so we'll be thrilled to report engagement news if (or when!) it happens!
Gallery | Katy Perry and John Mayer