Zac Efron and Vanessa Hudgens Split?

Zac Efron and are reportedly over, E! reports.

The two, who started dating when they were just teenagers costarring in the hit High School Musical franchise, recently called it quits.

"It's nothing dramatic," one source said. "There's no third party involved."

Says another source, "They were together for so long. It just ran its course."

"Right off the bat, we had a connection, I think everybody could see it," Hudgens, , said in the June issue of Glamour.

Efron, 23, also recently spoke of their relationship, saying the pair's love was "exactly how it should be. It's real."

Sources insist they remain friends.