Bradley Daines-Degroot assaulted two victims aged seven and 12.
Daines-Degroot was a teenager when the assults took place. He denied there had been any form of sexual contact with either boy.
He is autistic and was accompanied by a psychologist in the dock and the witness box throughout his five day trial in April.
He was jailed for seven and a half years by judge Jeremy Griggs who said "This was serious offending continuing over a number of years when the defendant himself was a teenager"