James Braid told Portsmouth Crown Court he considered himself hetrosexual but said there had been one drunken incident between him and one of the alleged victims after he had left school.
The former teacher at Bay House School, Gosport, denied any
thing had happened between them when the boy was at school but asked by Sarah Jones for the defence if there had been any sexual contact he said: 'Yes once, on one occasion. That happened when he was about 25, he was at work, he would come and stay on occasional weekends.
'He came down on the Saturday, we had a meal, we had a drink, we watched a Bette Midler video.'
He said they had drunk a number of gin and tonics and had a bottle of wine each then became intimate.
Asked who had initiated it, he said: 'I can't remember, I'd had an awful lot to drink. I was very embarrassed afterwards.'
He said before that night he had done nothing but help the man, who is now in his 40s. 'The relationship just developed over a number of years and when he left school he kept contact with me,' he said.
'I don't want anyone to feel I'm pursuing them. I always leave it to other people to maintain the contact.'
He admitted taking boys to his parents home by the seaside but said he never thought it would be a problem.
Asked why he never took girls, he said: 'Because I felt that left me in a very vulnerable position. At the time, I was protecting myself.
'I never gave it a thought that I was in a vulnerable position taking a boy.'
He said that after speaking to the boy's mother he formed the impression that he had been abused by his own father.
He said: 'It's difficult to know whether he saw me as a father figure, an older brother or a kind uncle.'
Braid, 58, is accused of abusing four boys between 1982 and 2002.
He denies seven charges of indecent assault, one of rape and one of another sexual offence. (Proceeding)
