Lo imperdonable (1975 TV series)

Lo imperdonable (English: The Unforgivable), is a Mexican telenovela produced by Ernesto Alonso for Televisa in 1975. Based on an original story by Caridad Bravo Adams and Fernanda Villeli. Amparo Rivelles, Armando Silvestre and Rogelio Guerra star as the protagonists, while Raquel Olmedo and Marilú Elizaga star as the antagonists.

In the year 2000, a new adaptation of Lo imperdonable was held, under the title of Siempre te amaré.