Here are five things to know about this rising star.
1. He used to be on Pretty Little Liars. During PLL's first season, Diego played the charming Alex Santiago, whose sweet relationship with Spencer (Troian Bellisario) was cut short by the evil "A". We're not exactly complaining — Spencer went on to find love with Toby (Keegan Allen) and they are totally cute — but we do miss having Diego's face on our small screen every week.
2. He already has two albums out. It's not a mistake that Diego's first big movie role is in a musical. He has already released two albums, Diego and Indigo.
3. He opened for Hillary Duff. He opened for three of Hillary Duff's concerts while she was touring in Mexico in 2006.
4. He was a Mexican soap opera star. Before he started working in the states, Diego was known for his role on Mexican soap Rebelde.
5. He was the star of Mean Girls 2. You know, the made-for-TV Mean Girls sequel. We think Rock of Ages is a step up.
Catch an all-newepisode of PLL on Tuesday, June 19 at 8 p.m. ET/PT onABC Family.