Wheeler-dealer Leonard Fulbirg was madly in love with the woman accused of murdering him, a Court heard.
The dad-of-twelve was "gutted" when his friend told him his lover Tracey Cameron was seeing another man, it is alleged.
Brian Davis told the jury at Leeds Crown Court yesterday he did not believe what Cameron told him about her alleged final meeting with Mr Fulbirg on the night he disappeared.
Cameron, 40, a mother-of-three, of Duns-ford Avenue, Bierley, denies murdering Mr Fulbirg between August 10, 1996, and March 3, 1997. Her former boyfriend Graham Haylett, also 40, of Wilson Wood Street, Batley, also pleads not guilty to murder.
The prosecution say they lured Mr Fulbirg to his death because he was an obstacle to their passionate affair.
Mr Davis said he told Mr Fulbirg that he believed Cameron was seeing another man.
"He was gutted because he was madly in love with Tracey and he wanted to be with her," Mr Davis told the jury. He said he saw Mr Fulbirg every day after his friend was released from prison on August 1, 1996.
Mr Fulbirg was living with his brother, Robert, in Coldbeck Drive, Buttershaw, until his disappearance on August 11.
Mr Fulbirg's dismembered remains were found high on the Oxenhope moors above Keighley in March 1997.
It is believed that his body was cut up and burned before being dumped in a lay-by.
The jury heard he was never seen again after arranging to meet Cameron at McDonalds in Rooley Lane, Bradford.
Mr Davis said he bumped into Cameron in Bradford city centre about two months after Mr Fulbirg vanished. He asked her if she had seen anything of Lennie.
"She said she had met him in McDonalds and told him she was with someone else and he just walked away," Mr Davis said.
"I knew that wasn't true."
Mr Fulbirg was seeing another woman while he was in a relationship with Cameron. Donna Parkin had an eight-month affair with him which began in 1995, she told the jury. Mrs Parkin, of Bridling-ton, said she knew her boyfriend as 'Bob Cameron'. "I worshipped him," she said.
She said he was a horse lover, looked like a gipsy and was nicknamed 'the wanderer'.
She said she ended the relationship when she found out he was a paedophile.
Mr Fulbirg's former wife Pauline Will-iamson told how they met when he was working as a doorman at a Bradford nightclub. "He could charm the birds out of the trees," she said.
She said they lived together in Kenton Way, Holme Wood.
Mrs Williamson told the court after they split up Mr Fulbirg "pursued me relentlessly and would not give up until he had tracked me down."
She told how she and her children were constantly moving home to avoid him.
Rhoda Russell said Cameron and Mr Fulbirg were her neighbours in Hyne Avenue, Bierley.
Mr Fulbirg was known as 'Indian' and she saw in newspapers that he had disappeared.
She said she saw Mr Fulbirg and Cameron's new boyfriend shouting and swearing at one another over the garden gate.
Later the two men rowed again and she saw that the boyfriend had hold of Mr Fulbirg. She never saw Mr Fulbirg again.
The trial continues on Wednesday.
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