Eh,

The rule is don't you ever even talk about forever
But you never say never in life. - Lady Antebellum

This is another one of my favorite lyrics. I love the band, for starters. And the song is amazing. But, these lyrics just caught my attention. I think that they're trying to say that don't talk about forever because you don't know what tomorrow might hold. And don't ever say never. Because you can do anything you put your mind to.