The founders of popular YouTube show The Try Guys said they were 'shocked and saddened' to learn their co-host Ned Fulmer was cheating on his wife with an employee, and explained why they decided to fire him from their company.
Fulmer, 35, will be edited out of most of their un-aired material, the founders said, and erased from marketing and publicity work.
The trio - Keith Habersberger, 35, Zach Kornfeld, 32, and details Eugene Lee Yang, 36 - published a video to their YouTube channel on Monday, updating their 7.8million subscribers to the latest developments.
They confirmed that they were alerted on Labor Day to the existence of footage showing their fellow co-founder, Fulmer, passionately kissing Alexandria Herring, who is a producer for their show.
The three said that Fulmer was fired from their company on September 16.
'Ned confirmed the reports and since confirmed that this had been going on for some time, which was obviously very shocking to us,' said Habersberger.
'And we just want you to know that we had no idea this was going on. All of that information was just as shocking to us as all of this has been for you this week.'
The Try Guys - from left: Eugene Lee Yang, 36, Zach Kornfeld, 32, and Keith Habersberger, 35 - on Monday published a video to their YouTube channel confirming that they had fired their colleague Ned Fulmer from their company, after he had an affair with an employee
Ned Fulmer (left) admitted to having a long-running affair with Alexandria Herring (right)
A picture of Fulmer and Herring (pictured) has been circulating the internet, exposing their affair
Fulmer is married to Ariel Fulmer, who made frequent appearances on the YouTube show, and the couple have two young sons.
Fulmer and his wife also hosted a podcast together called Baby Steps - an unvarnished look at how they raise their 'Instagram-worthy family.'
Yang, who is in a long-term relationship with Olympic gold-winning swimmer Matthew McLean, said the three of them were devastated at the damage Fulmer had done to their company and brand.
'From the jump, we were acutely aware of just how contrary this was to the values of the company we've built and those of everyone who works here,' said a noticeably angry Yang.
'This is something we took very seriously.
We refused to sweep things under the rug. That is not who we are and is not what we stand for.'
Kornfeld struggled to contain his emotion when he spoke of the hurt and sadness they felt at Fulmer's actions.
'I don't know that we'll ever be able to fully articulate the pain we feel at this moment,' he said.
'It's hard to re-watch old videos that we love and are proud of.
'We're losing a friend, we're losing someone we built a company with, we have countless memories with.