The boyfriend of the woman who had a two-year fling with John Prescott spoke yesterday of his heartbreak over her affair with the Deputy Prime Minister.

Mr Prescott has admitted having an affair with one of his secretaries, Tracey Temple.

Her boyfriend, lorry driver Barrie Williams, aged 46, said: "I just can't believe that my darling Tracey has been sleeping with John Prescott behind my back.

"How dare he split up my relationship with the woman I'd planned to marry?"

Mr Williams, of Bordon, Hants, said Ms Temple asked him to marry her just two days after she first had sex with Mr Prescott.

"I'm just glad we hadn't got round to tying the knot," he said. He believes his fiancee's decision to rent a property in London two years ago was so she could have secret trysts with Mr Prescott.

Mr Williams and Ms Temple got together at the end of 1998 when he was working as a cab driver in Liphook, Hants.

He picked her up from the railway station one evening and they chatted as he drove her home.

They had both come out of messy divorces and had a lot in common. He described her as insatiable with a big sexual appetite, and adventurous and flirtatious when she had been drinking.