A Terenure College teacher told the Garda that a student whom he allegedly indecently assaulted asked him several times for money to clear his gambling and other debts.
The 63-year-old accused gave details of sums of money he handed over, and told how on one occasion in April 1988 he stopped a cheque for £650 after the alleged victim claimed he was "let down" by someone and was unable to repay the loan.
Det Garda George Trenier, now retired, confirmed to prosecuting counsel Ms Caroline Biggs that the accused recounted how the alleged victim told him he had to go to Gowran Park to pay a bookie to whom he owed the £650. He said the bookie had threatened to reveal it to his father.
The teacher also handed over three letters he got from the alleged victim when he was at university and four cheques he paid to the alleged victim.
The accused has pleaded not guilty to two charges of indecently assaulting the alleged victim between November 1st and December 31st, 1985, at his home. He also denies 12 counts of gross indecency at the college and another location in south Dublin on dates unknown between September 1st, 1986, and March 31st, 1988.
Det Garda Trenier confirmed to Ms Biggs the accused claimed the sexual relationship began when the student was at the age of consent. He said it began in the accused's house and consisted of kissing and mutual masturbation. Later oral sex also took place.
Following a phone call in 1998 from the alleged victim, the accused revealed to his principal that what he called "inappropriate sexual activity" had taken place, and he went on extended sick leave.
The hearing continues before Judge Frank O'Donnell and a jury of four women and eight men.