According to a friend, Zac Efron and Vanessa Hudgens haven't broken up -- no matter what the National Enquirer says.

The 'High School Musical' couple are still together, the friend says, laughing at a report that suggested the two had split but Vanessa didn't know it yet, Usmagazine.com reports.

"They spent months together up in Vancouver, where they are both filming movies," the friend told Us.