Reguilon's ex broke down in tears on TV show following their split last year

A recently aired Spanish reality TV show has revealed former Man United defender Sergio Reguilon's ex broke down in tears following their split last year.

Reguilon, 27, and social media star Marta Diaz, 23, ended their long-term relationship last September just as Diaz was filming for the successful Spanish programme 'El Desafio'.

Despite the recordings being six months ago, the show, which sees eight celebrities given different challenges each week, has only just been aired on TV.

One of the recordings sees Diaz, who has 3.4million followers on Instagram, clearly struggling with her emotions and unable to stop herself from crying in front of her fellow contestants.

Explaining what had upset her, she said: 'I’m not crying because of the performance. It’s just that this week has been very complicated for me personally.'

'I was rehearsing and concentrating on what my wonderful coaches were telling me, while in reality I was thinking about something else.'

It is not the first time that Diaz has become emotional over her relationship with Reguilon.

She also featured in an Amazon Prime show, La Vida de Marta Diaz, last year, and started crying when speaking about the Premier League star.

'I would say many things to Sergio… Thank you, thank you for…' Diaz said as she started to cry, before adding 'For everything. He has helped me a lot and he has been a very, very important pillar for me, and he will always be.'

It is understood that the documentary, which Reguilon also featured in, was filmed shortly before their break-up, before being aired just weeks after their split.

Diaz went on to star in 'El Desafio' as she finished ahead of her rivals and later insisted that she was pleased that she went ahead with participating in it despite