Mirta Miller Boyfriend: Who Was the Actress’s Famous Partner Alfonso de Borbón?

Mirta Miller’s romantic life continues to attract interest because of her relationship with Alfonso de Borbón, Duke of Cádiz, a prominent member of Spain’s aristocratic circles. The Argentine actress, who became a recognizable figure in Spanish cinema during the 1970s, has spoken openly about their romance and the emotional impact of losing someone she considered one of the great loves of her life.

In a revealing television interview in February 2024, Miller revisited her relationship with Alfonso, explaining how their romance began and why they never married. Although her connection to the duke remains an important part of her personal history, there is no reliable recent confirmation that she currently has a boyfriend.

So, who was Mirta Miller’s boyfriend, and what happened to their relationship? Here’s everything to know about Alfonso de Borbón, her previous romances and her life beyond acting.

Who Is Mirta Miller’s Boyfriend?

Mirta Miller has not publicly confirmed a current boyfriend. As of November 2026, her present relationship status remains unclear.

The actress is best known for her longtime romantic relationship with Alfonso de Borbón y Dampierre, Duke of Cádiz, who was previously married to Carmen Martínez-Bordiú.

Their romance attracted considerable attention because Alfonso belonged to the extended Spanish royal family, while Miller was a successful actress associated with Spanish cinema.

Although the couple maintained a relatively discreet relationship, Miller later acknowledged that their connection had been serious and emotionally meaningful.

She has continued discussing Alfonso in occasional interviews, suggesting that their relationship remained an important chapter in her life.

Mirta Miller’s Relationship With Alfonso de Borbón

Mirta Miller and Alfonso de Borbón met during the late 1970s, when Alfonso was still married to Carmen Martínez-Bordiú.

Their romantic relationship developed after his marriage began to break down.

Miller later explained that Alfonso initially pursued her and that their romance began privately.

At the time, she was an established actress, while Alfonso was a prominent aristocrat whose personal life frequently attracted media attention.

Their relationship was complicated by his public position, family responsibilities and previous marriage.

Despite those difficulties, the couple remained romantically involved for several years.

In later interviews, Miller described Alfonso as a sincere and natural person who had left a lasting impression on her.

Why Did Mirta Miller and Alfonso de Borbón Never Marry?

Although Mirta Miller and Alfonso de Borbón shared a serious relationship, they never married.

Miller has explained that their romance remained discreet partly because of Alfonso’s family circumstances and the public attention surrounding him.

They also maintained separate residences rather than establishing a conventional married household.

In a 2014 interview, Miller revealed that Alfonso had once asked whether they could have a child together.

However, she was frightened by the prospect and did not pursue the idea.

The actress also acknowledged that becoming part of Alfonso’s aristocratic family would have involved significant personal and public responsibilities.

Their relationship ultimately ended when Alfonso died in a skiing accident in Colorado in January 1989.

Miller later described the loss as one of the most painful experiences of her life.

Mirta Miller Previously Dated Bernard Delagrange

Before her relationship with Alfonso de Borbón, Mirta Miller was romantically involved with a Frenchman named Bernard Delagrange.

She discussed the relationship during an interview about the most important romances in her life.

According to Miller, Bernard died in a road accident while still in his early thirties.

His passing was a deeply upsetting experience for the actress.

Miller later explained that losing two important partners under tragic circumstances had affected her outlook on relationships.

She also identified Alberto, her first boyfriend in Argentina, as another significant romantic connection.

In that interview, she described Alberto, Bernard and Alfonso as the three major loves of her life.

Who Is Mirta Miller? Her Age and Early Life

Mirta Miller was born Mirta Jovita Bugni Chatard on August 16, 1948, in Buenos Aires, Argentina.

She is 78 years old as of November 2026.

Miller began her professional career as a model before moving into acting.

She relocated to Spain during the late 1960s and gradually established herself in the country’s entertainment industry.

Her appearance and screen presence helped her secure roles in numerous Spanish films.

She became particularly associated with the popular cinema of the 1970s, appearing in comedies, dramas and horror productions.

Although her personal relationships occasionally attracted attention, Miller developed a substantial acting career independently of her connection to Alfonso de Borbón.

Mirta Miller’s Acting Career and Famous Movies

Mirta Miller appeared in numerous films during her career, particularly throughout the 1970s.

One of her most recognizable performances came in Cría cuervos, the acclaimed 1976 drama directed by Carlos Saura.

The film became an important work of Spanish cinema and received international recognition.

Miller also appeared in Dr. Jekyll and the Wolfman, Count Dracula’s Great Love and The Girl from the Red Cabaret.

Her filmography includes the 1984 production Bolero, starring Bo Derek.

Throughout her career, she worked across different genres and established herself as a familiar presence in Spanish entertainment.

Although she eventually reduced her acting commitments, her earlier performances remain part of the history of Spanish popular cinema.

Does Mirta Miller Have a Husband or Children?

Mirta Miller has not publicly established a consistently documented current marriage or family arrangement.

Some online biographical databases contain conflicting information about a possible spouse, but those entries are not supported by sufficiently reliable details.

Her relationship with Alfonso de Borbón is better documented through her own interviews.

Miller has confirmed that she and Alfonso never married or lived together.

She also revealed that Alfonso once expressed an interest in having a child with her, although they did not have children together.

There is no sufficiently verified public information establishing that Miller has children from another relationship.

For readers searching for Mirta Miller’s boyfriend, her most widely documented romantic partner was Alfonso de Borbón, Duke of Cádiz. She has also spoken about earlier relationships with Alberto and Bernard Delagrange. While her past romances remain part of her public story, her current relationship status has not been reliably confirmed.