Marta Díaz is a Spanish influencer, author, and television personality, best known internationally as the former girlfriend of footballer Sergio Reguilón.
The two dated from 2019 to September 2023, and their relationship unfolded largely in public as both built their respective careers.
Since the breakup, Marta has continued to grow her independent media career, winning back-to-back Forbes influencer awards, releasing her own Prime Video docuseries, and, in one of its most talked-about moments, breaking down in tears on camera while discussing the end of her relationship with Reguilón.
Table of Contents
Marta Diaz Biography
She was born on October 30, 2000, in Seville, Spain. Marta Díaz García later moved to Madrid, where she has lived for much of her adult life and built her career.
She is the sister of David Díaz, a well-known YouTuber who goes by the online name AlphaSniper97 and is known primarily for his Call of Duty gameplay content.
The two have appeared in videos together over the years, including alongside prominent Spanish streamer TheGrefg. Marta has spoken about her lifelong interest in horses, including her experience with horse training.
This passion has remained a consistent theme throughout her social media content and personal interests.
Detailed information about her parents and early family life has not been widely publicized, consistent with her preference for keeping certain aspects of her personal life private, even as she has built a substantial public career.
Sergio Reguilon
Marta Díaz and Sergio Reguilón began dating in 2019, keeping their relationship private during its early months before Spanish media took notice and speculation began to spread.
The couple made their first public appearance together at the wedding of footballer Sergio Ramos and television personality Pilar Rubio, after which they publicly confirmed their relationship.
Over the following four years, Marta and Sergio built a highly visible relationship, frequently appearing together at events and sharing their lives on social media, including during his time at Tottenham Hotspur and later during his loan spell at Manchester United.
In May 2023, Marta marked their fourth anniversary with an affectionate tribute on Instagram.
Despite that public celebration, reports from Spain indicated that the couple had broken up by September 2023 while Reguilón was on loan at Manchester United.
Neither party offered a detailed public explanation for the split at the time, and the breakup only became the subject of broader and more emotional public discussion after Marta addressed it candidly in her 2025 Prime Video docuseries.
Following her split from Reguilón, Marta Díaz has continued to build her career independently, expanding from social media into television and streaming projects while maintaining her substantial online following.
In 2025, she confirmed that she was in a new relationship with Marlon Lundgren García, marking a new chapter in her personal life, distinct from the years she spent as one of Spanish football’s most recognizable partners.
Career
Marta Díaz built a genuine, independent media career well before and beyond her relationship with Sergio Reguilón.
She launched her YouTube channel in 2018, growing it into one of Spain’s most-followed lifestyle channels, with content spanning beauty, travel vlogs, and everyday life.
The channel eventually surpassed 2 million subscribers, while her Instagram following grew to more than 3 million at its peak.
In 2019, Marta published her first book, Todo Lo Que Nunca Te Dije (“Everything I Never Told You”), which explored social media culture and offered guidance on building a following on platforms such as Instagram and YouTube, reflecting her own firsthand experience of growing an audience from the ground up.
Marta’s career reached new heights in the years following her breakup with Reguilón. In 2022, Forbes named her Spain’s Best Lifestyle Influencer, and she followed that recognition with the Forbes Ídolo Lifestyle Award in 2023, cementing her status as one of the country’s most successful independent content creators.
In January 2024, she competed in the fourth season of El Desafío, a physical competition reality show on Antena 3, expanding her media presence beyond social platforms and into mainstream Spanish television.
Her most significant career milestone came in 2025 with the release of La Vida de Marta Díaz, a docuseries produced by Amazon Prime Video in partnership with Mediaset España and Producciones Mandarina.
The series followed Marta’s life in real time, offering a considerably more personal and unfiltered look at her career and relationships than her curated social media content had ever provided.
In one of the series’ most widely discussed moments, Marta broke down in tears while discussing her relationship with Reguilón, creating a genuinely raw and vulnerable scene that contrasted sharply with the polished public image she had maintained throughout their years together.
Notably, Reguilón still appeared frequently throughout the docuseries because much of the footage had been filmed before their split became public, giving viewers an unusually direct and well-documented look at the relationship’s final chapter.
