Efron said the compliments from his idol caused him to break into tears.
He went on to say he thanked Jackson for not only inspiring him, but also showing him how to dance, believe in himself and "shine."
"That made him cry and we were both crying to each other on the phone," Efron said.
"And he ended the whole phone conversation with something along the lines of, 'Hey, Zac.' And I stopped crying for a second. He's like, 'Isn't it awesome?' And I was like, what? And he goes, 'Dreams really do come true, don't they?' And I was like, Michael, you can't say things like that. You're killing me, man!"
Jackson died at the age of 50 on June 25, 2009.
Ortega directed a film called "This is It" featuring Jackson preparing for what was supposed to be his final concert residency in London.
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