Justin Bieber and Selena Gomez may be the cutest couple in Hollywood.

The duo are sickeningly romantic: exchanging rings, renting out entire movie theaters, hopping on flights to see one another for a few hours (or a whole night, ow ow!).

The pair are pretty much their generation's answer to Brangelina -- minus the rugrats, of course. They've described one another as best friends in addition to just being boyfriend and girlfriend. These two are in it for the long haul!