Starring Lucero, Jaime Camil, Jesús Ochoa, and Patricia Navidad as the main protagonists; with the first actresses Leticia Perdigón and Helena Rojo as the co-protagonists; while Mariana Seoane, Marcelo Córdoba, Luis Manuel Ávila, and Roberto Ballesteros as the main antagonists.

With the stellar performances of Carlos de la Mota, Pablo Valentín, Tiaré Scanda, Dalilah Polanco, Ferdinando Valencia and the first actors Manuel Ojeda and Carlos Bracho; with the special participations of Christina Pastor, Martha Julia, Latín Lover, Eduardo Santamarina, Otto Sirgo, Fabiola Guajardo, María Isabel Benet, and Susana Zabaleta.

On February 20, 2012, Canal de las Estrellas started broadcasting Por ella soy Eva weeknights at 8:15pm, replacing Una familia con suerte.

[10] On July 16, Univision started broadcasting Por ella soy Eva weeknights at 8pm/7c, replacing one hour of Un Refugio para el Amor.

[14][15] Juan Carlos Caballero Mistral (Jaime Camil) is a busy man working in Grupo Imperio.

They fall helplessly in love with each other and plan to marry and start a family with Helena's son Eduardo (Lalito).

Mimi helps him transform from Juan Carlos Caballero to Eva Maria Leon Jaramillo viuda de Zuloaga.

Although Plutarco had a wife, Antonia Reyes de Ramos (Christina Pastor) who died of a heart attack, he also has an ex-lover, Rebeca Oropeza (Mariana Seoane).

Univision's July 17 premiere of Por ella soy Eva averaged 3.7 million viewers.