He then spent a long time off Argentine television, in order to study, but he returned in 2002, playin "Guido Lassen" in "Rebelde Way", alongside fellow former "Tiny Angels" stars Felipe Colombo, Luisana Lopilato, Camila Bordonaba and Benjamín Rojas.
In 2008, he got one of the lead roles in the telenovela 4x4, with Luisana Lopilato, Camila Bordonaba and Rodrigo Guirao Diaz.
In 2002, Santa Cruz acted (and, in many cases, was reunited) with fellow Chiquititas stars Camila Bordonaba, Felipe Colombo, Dario Lopilato, Lopilato's sister Luisana, and Georgina Mollo, and he acted alongside noted actors such as Catherine Fulop and Diego García in Rebelde Way, another major Argentine television hit.
Camila Bordonaba and Luisana Lopilato acted together in two telenovelas - Chiquititas (1998-2001 (Bordonaba acted since 1996)), and Rebelde Way (2002–2003) - and in two films - Chiquititas: Rincón de Luz (2001) and Erreway: 4 Caminos (2004), and they were both the members of the teenage sensation band Erreway.
Consisting of four leading actors from the television series Rebelde Way — Camila Bordonaba, Felipe Colombo, Luisana Lopilato and Benjamín Rojas — the band functioned actively from 2002 to 2005, selling approximately 10million units worldwide.
The main actors in this film are the stars of Erreway: Luisana Lopilato (Mía), Felipe Colombo (Manuel), Benjamin Rojas (Pablo) and Camila Bordonaba (Marizza), who portrayed their roles from television hit series Rebelde Way.
The music video, directed by Cris Morena, shows four Erreway members — Camila Bordonaba, Benjamín Rojas, Felipe Colombo and Luisana Lopilato — suffering in private, having a bath, while they sing about their love pains.
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The song was written by famous producer, director and composer Cris Morena and Silvio Furmansky, and features vocals of all four Erreway members — Camila Bordonaba, Benjamín Rojas, Felipe Colombo and Luisana Lopilato.