Justin Bieber is breaking the hearts of young girls all over the world right now.  Jimmy Fallon tells him that it won't last forever and one day things are going to change. As always, it's hilarious.

In what looks like it's going to be a duet between Jimmy Fallon and Justin Bieber, a video of Fallon playing an older Bieber turns into a bit of a warning of things to come. Not like he's predicting the rapture or anything, but he is letting Bieber know that "someday" things are going to change. Fallon hits another home run with this and I'm glad to see that little Bieber jerk can laugh at himself.