The former boyfriend of 12-year-old Kayleah Wilson was sentenced Friday to eight years in prison for sexual assault on a child.Robert Montoya was found guilty in March of having sex with Kayleah while she was a minor.In court, the only thing Montoya said was, Im sorry for what I did.Kayleahs family did not want to talk after the sentencing but Montoyas family blamed Kayleah, saying she initiated the sexual relationship.Before she handed down the sentence, the judge told Montoya, "Your childhood does not justify having sex with a child."Montoya faced a minimum sentence of eight years and a maximum sentence of life in prison. If Montoya doesn't complete his requirements as a sex offender, his prison could term could be extended. Once he is released he will spend 20 years on probation.Kayleah's body was found in an irrigation ditch months after she was reported missing. She disappeared March 28, 2010 while on her way to a birthday party and was last seen near the Greeley Mall.Her body was found May 19, 2010 several blocks from her home.No one has been arrested in the killing and no suspect has been named.Police have not said publicly how the girl was killed in order to protect the investigation.Montoya has not been charged in her death. 7NEWS' Reporter Russell Haythorn is in the courtroom and will provide updates throughout the day. Please refresh this page for more information.