A convicted peadophile was found living with a new partner and her children but they were unaware of his sinister past.
Dylan King was jailed after he failed to tell police where he lived.
the 30-year-old was previously jailed last June after disappearing for seven months and was caught living with a woman and her children after meeting her on a dating app.
King was ordered to sign the Sex Offenders Register and jailed for two years and three months in 2012 for sexual activity with a child under 16 years of age.
He appeared at Liverpool Crown Court yesterday after the court heard he had moved without informing police within three days of his new address.
Louise Santamera, prosecuting, explained on February 22 last year King was released from prison after previously breaching the same order.
He then moved without telling police, Ms Santamera said, but King claims a Merseycare staff member said they would tell police the new address.
Ms Santamera said that due to his previous breaches it "must be abundantly clear he and he alone is responsible for attending the police station to provide these details".
Gary Lawrenson, defending, said this was not accepted and it was an "unintentional act of forgetfulness".
King has eight previous convictions, a number of which are failing to comply with notification requirements.
These arose after his 'disappearance' from Merseyside for seven months.
When he was eventually found King was living in Teesside with a woman he had met on a dating app and her children, all of whom had no idea of his sinister past.
He had mentioned to the woman he had been in trouble with the police and had served time, but didn't explain he was a registered sex offender.
A court heard he had placed the children at "serious risk" after being left alone with them "numerous" times.
There was no evidence any offence had been committed against the woman's children.
Mr Lawrenson today said: "The gist of the probation update is positive in that he is making steps to address his issues."
Mr Lawrenson said King is "trying to make some progress" in addressing his mental health issues.
He said: "I think it will be right to say in the past his response has been pretty awful so [the probation service] are quite impressed with his positive attitude in recent times."
King, of Grey Road, Walton, admitted failing to comply with his notification requirements.
Judge David Aubrey, QC, said: "Regrettably on numerous occasions you have failed to notify the police of any change of address."
The judge said it was "difficult to determine whether this was a deliberate act of an unintentional act of forgetfulness".
King was jailed for one year.
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