The Chase's Mark Labbett has apologised for experiencing 'bursts of anger' while looking for love on Celebs Go Dating.
The professional quizzer, 59, admitted that the filming schedule of reality TV was drastically different from what he is used to and as a result, he lost his temper on set.
He told The Mirror: 'I'm used to being in a pre-planned environment on The Chase, where timings are strict, but reality TV can go on for longer and the days end up ending later than you think.'
Mark, who has publicly stated that he believes he is on the autism spectrum but not been diagnosed, said his mental health suffered on the show.
The star added: 'For me, the one thing I found was that you need a social battery recharge, and as someone on the spectrum, that's something I really need.'
He also revealed that his suspected neurodivergence has impacted his dating life as he finds people hard to read.
Mark now plans to take the lessons he has learned from filming the show into any future contracts to ensure he does not act in an unbecoming manner again.
He said: 'I got quite grumpy on set. I did apologise to everyone, but, in the future, I'd definitely have it in my contract that I need breaks to have a nap and recharge.'
As well as admitting that he got moody on set, he also explained that he was impacted by his diabetes.
He revealed: 'I wear a glucose monitor and on one of the nights, my glucose level went off the scale.'
This prompted his co-star Kerry Katona to joke: 'And Mark went off the scale too!'
Even though the show was a 'learning curve' for the star, he said that he is still looking forward to its release.
Mark's grumpiness was not the only issue he faced in his latest attempt to find love and he also had a health scare on the set of Celebs Go Dating, which temporarily halted filming.
The presenter suffered what's known as a hypoglycaemic attack - an event caused by a person's blood sugar dropping too low, resulting in symptoms like shaking and sweating.
Mark was previously in a relationship with TV presenter Hayley Palmer, 43, but the pair split a week after their first anniversary last year.
Mark (pictured on the far left) said that even though Celebs Go Dating was a 'learning curve' for the star, he is looking forward to its release.
Recalling the moment, Mark said: 'One night, I had a hypoglycaemic attack.
'I might have been a bit grumpy that night. I apologised to everyone after.'
Mark was previously in a relationship with TV presenter Hayley Palmer, 43, but the pair split a week after their first anniversary last year.
It was Mark who decided to leave the relationship, blindsiding Hayley when he ended their romance over the phone.
The Chase presenter later put his reasoning down to their 16-year age gap and stressed to The Sun that he was 'very lucky' to have dated her for a year.
Prior to this, he was married to Katie Lawrence, 32, who was 27 years his junior.
The couple were together for seven years and share one child, a son, but parted ways in 2020, with their age gap once again cited as a contributing factor in the split.