The young heartthrob, who gained fame as Rocco in the Mexican soap opera Rebelde, got to sing and dance opposite Julianne Hough in 2012's Rock of Ages. And though he's only 23, he's smart enough to know the way to a woman's heart. "For Julianne's birthday [during filming], I was wondering what to get her," he explained on collider.com. "I decided to sing Las Mañanitas, which is Happy Birthday in Spanish, while playing guitar." Awwww.