A teen who "sexually experimented" on his five-year-old cousin by blindfolding her and getting her to perform sex acts has been given a six-year sentence.
The abuse happened after an unsuccessful relationship with an older girlfriend.
Mr Justice Paul Carney had commented at the sentence hearing last week that the fact that he used her to "experiment" on is "head and shoulders above anything I've dealt with before."
Detective Garda Christine Brady said the child spent a lot of time in her cousin's house and that he would bring her to his room to play video games.
Before he let her play the games he took a blindfold from his sock drawer, put it on the child and made her perform a sex act. This happened on about four occasions.
The girl told her mother about the abuse and after a family meeting the accused was sent for counselling in the Granada Institute.
The gardai were not alerted until 2009 as it was felt he posed no danger to anyone else.
Caroline Biggs, defending, told the court that her client had written a letter of apology after the abuse and felt sickened by what he did.
The now 25-year-old man pleaded guilty at the Central Criminal Court to three counts of sexual assault at his Kildare home during 2003.
The judge imposed a six-year sentence but suspended the final three years on strict conditions.
He said the court had to have regard to the rehabilitation of a young offender as well as the punitive element of sentencing.
In a victim impact report read by the victim's mother, the girl said she continues to suffer while her abuser has gone on to live a successful life.
Her mother read that the girl is "of the strong opinion that she will never become a mother as one cannot keep a child safe in this world."