

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.

Gabriel Coronel
Mauricio Blanco
Sandra Destenave
Carmen de Blanco
Jorge Consejo
Gilberto Verdugo
Orlando Fundichely
Orlando Aragón
Rubén Morales
Ricardo Gómez
Yadira Santana
Guadalupe 'Lupe' Guzmán
Jimmie Bernal
Andrés Maximo
RJ Coleman
Robert 'Bob' McDowell
Jonathan Freudman
Diego Barón

Ana Carolina Grajales
Sofía Blanco
Alexander Alsina
Sebastián Aragón (as Alex Hernández)
Cristina Mason
Nora Guzmán
Alma Matrecito
Violeta Verdugo
Andy Perez
Cassius Dupont

Howard Ross
Manuel Branco

Oscar Priego
Gonzalo Mendoza

Sandra Echeverría
Miranda Beatriz Cruz

Danilo Carrera
Maximo

Christian de la Campa
Joaquin 'Joaco' Rivera
Kevin Aponte
Alejandro 'Ale' Portillo
Ended