Cuando me enamoro (English: Timeless Love[1]) is a Mexican telenovela produced by Carlos Moreno Laguillo for Televisa.

The story begins with the birth of two sisters born on the same day: Regina and Roberta, both daughters of Roberto Gamba (Sebastián Rulli) but from different mothers.

Josefina gets the girls fake birth certificates which list their father as unknown and gives them both her surnames, she also changes baby Regina's name to Renata.

Years later, Josefina marries millionaire Gonzalo Monterrubio (René Casados), who adopts her daughters and raises them as if they were his own, alongside his biological son, Matías.

While Renata is educated and works for their father's company, the Monterrubio Corporation, Roberta is shallow and lives off of her family's wealth.

Roberta is in a secret relationship with Rafael Guttiérrez de la Fuente (Sebastián Zurita), a former employee of the Monterrubio Corporation.

Jerónimo swears to avenge his brother's death by seducing, marrying, and subsequently making life unbearable for "La Bonita".

However, through a series of misunderstandings, along with Josefina's deceitful machinations, Jerónimo is pointed in Renata's direction as "La Bonita."

Fate and time will prove him wrong, but in the meantime Jeronimo begins to lose Renata's love because of his mistreatment of her.