
Relaciones Peligrosas, originally known as Fisico o Quimica, is a Spanish-language telenovela produced by United States-based television network Telemundo Studios, Miami. It is an adaptation of the Spanish television series Física o Química. It has Sandra Echeverría, Gabriel Coronel, Maritza Bustamante, Gonzalo García Vivanco, Jonathan Freudman, Mercedes Molto, Carlos Ferro, Daniela Navarro, Renato Rossini, Kevin Aponte and Ana Layevska in the leading roles of the plot.
Mauricio Blanco

Carmen de Blanco
Gilberto Verdugo
Orlando Aragón
Ricardo Gómez
Guadalupe 'Lupe' Guzmán
Andrés Maximo
Robert 'Bob' McDowell
Diego Barón
Sofía Blanco

Sebastián Aragón (as Alex Hernández)
Nora Guzmán
Violeta Verdugo
Cassius Dupont
Manuel Branco

Gonzalo Mendoza

Miranda Beatriz Cruz

Maximo

Joaquin 'Joaco' Rivera

Alejandro 'Ale' Portillo
Patricia 'Patty' Milano

Benita Mendoza
Olivia Kloster

Santiago Madrazo
Juan Pablo Reyes 'JP'/Daniel Arambula/Gael Sánchez

Clementina 'La Nena'
Teresa Vargas

Armando Madrazo

Bertrand Dupont

Mariela Díaz
Soledad Cruz

Yesenia Rivera
Oliver Torres
Billy Aleman

Elizabeth Gómez

Hector Barón