During an interview with Channel 5's Jeremy Vine she said: "I massively apologise to Ryan, his friends and fans and every single person who watched that".
The teaser video also introduced a 23-year-old semi-pro footballer from Suffolk as a housemate.
The DJ added: "I hope there's not too much of a witch hunt because her career is already over now".
The video ends with Friday's launch date and the tag line "you decide".
He took a deep breath as he fought back the tears over seeing the emotional footage.
The actor beat United States actress Kirstie Alley to win the Channel 5 show in Monday night's live final. He had been the bookies' favourite following the Pallett drama.
Lucy has been strongly fighting Ryan's corner on the outside world in the wake of Roxanne's allegations that he "punched her", taking part in her own TV interview where she denounced Roxanne for lying.
After walking out of the Channel 5 show, former Emmerdale actress Pallett apologised and said she had made "a massive, terrible mistake".
"It was totally unexpected", he said. It was a sign of affection that I've used on Gabby, the boys. The most important thing for me is that she never does this to anyone else'. Then the game became real life for me.
He also admitted he found it more than a little embarrassing when news of his bankruptcy hit the headlines, explaining: "Having something like bankruptcy all over the media, I found it really embarrassing because you're in the spotlight there's no hiding".
"I felt I was going to be getting a call from the police for doing something untowards to a woman".
He struggled to contain his tears when Willis told him of the outpouring of support for him.
After Ryan won the show, he spoke out about the situation between him and Roxanne, saying: "If she wants forgiveness and it makes her feel better, than I would rather just give her that".