Simon Thomas recounted how his friends had "abandoned" him after losing his beloved wife Gemma, who had leukemia last November.
The former Sky Sports presenter said his comrades had given him "incredible" support just after Gemma's death, but some had lost touch in the months that followed.
Simon British said, "It's been hard, it's horrible, it's the hardest thing to experience, especially at the beginning of the period, because we felt time was running out.
"For the first six or seven weeks, my family has been amazing.
"But there were one or two people who wanted to text and say," We are with you every step of the way, we will be with you. "
"And you think back to these SMS from a year ago and you say," Where were you? "Save what you promise," he said.
Simon has been raising his son Ethan as a single parent since the loss of Gemma and has also talked about the burden of supporting his child's pain as well as his own.
He said: "When children are involved, you feel so much pain in them, because one thing you both cry is for mom, the years we thought she would have a future. as my wife and mother, and the years [Ethan] should have enjoyed.
"Suddenly, it takes a lot of pain, I can cope with my own pain and sorrow."
Ethan appeared alongside his father while they were talking about their experience in the series.
Simon thanked his son for helping him get up in the morning.
"I have to race at school, being a single parent is the hardest thing, but Ethan is a huge blessing, but it's hard work."
Gemma died of leukemia in November of last year, just three days after diagnosis, leaving behind Simon and his eight-year-old son Ethan.