text: Going down on one knee is always a nerve-wracking experience but popping the question in public comes with an extra helping of risk. And for one man, it was a risk that most certainly didn't pay off after he was very publicly turned down by his girlfriend during an appearance on The Jeremy Kyle Show. The couple, known only as Jamie and Dawn, were appearing on an episode entitled: 'My fiancé is a womaniser but is he a cheat?' Scroll down for video . The big moment: Jeremy Kyle Show guest Jamie goes down on one knee in front of girlfriend Dawn . Having refused to take one of the show's famous lie detector tests, Jamie attempts to show his love for Dawn by proposing - but has the ring thrown back in his face. In front of Mr Kyle and a tittering studio audience, a furious Dawn then storms out, screeching: 'I'm out of here!' The moment came towards the end of a stormy show in which the couple had hurled accusations at each other, with Jamie admitting to having sex with one of Dawn's friends while she took their pet dog for a walk. But following Dawn's dramatic walkout, Jamie, flanked by a furrow-browed Mr Kyle, insisted that it had all been a huge mistake. Not impressed: She opens the box, takes a look at the ring and then throws it in his face . Heading off: Dawn then storms off the stage, screeching: 'I'm out of here!' 'It was one mistake,' he explained. Blaming his refusal to take the lie detector test on his MS, he continued: . 'It was not my decision to not do the lie detector. The friend I had sex with was a one off.' But his pleas fell on deaf ears, with a sobbing Dawn going on to reveal that she had also had a fling with someone else. 'Twice you went behind my back,' shouted a furious Jamie. 'I made one mistake.' Having been advised to 'put up or move on' by Mr Kyle, the couple left the show with no plans to marry in the near future. Pleading: Jamie then attempts to remonstrate with Dawn and apologises for cheating . Bombshell: Dawn then drops a bombshell of her own and admits to doing a spot of cheating herself .
target: A man named Jamie proposed to girlfriend Dawn on the ITV show .
  She reacted by throwing the diamond at him and storming off in tears .
  Dawn then followed that by revealing that she had been cheating on him .
  Episode was entitled: My fiancé is a womaniser but is he a cheat?
  The Jeremy Kyle Show, weekdays at 9.25am on ITV .