One celebrtity couple who hasn't yet announced that they're getting married is Katy Perry and John Mayer.
But OK! magazine is predicting that Katy and John will soon be getting engaged.
"They're absolutely head-over-heels in love. John's been begging Katy to marry him since the summer, and she's resisted, but in November she finally accepted his proposal. Now it's full steam ahead. John and Katy are incredibly excited about getting engaged."