A man admitted Monday that he sexually assaulted three girls multiple times over a three-year period at a Paterson home, authorities said. Victor Enamorado, 45, of Paterson pleaded guilty to three counts of first degree aggravated sexual assault and faces 18 years in state prison once he is sentenced later this year, according to a statement from the Passaic County Prosecutor’s Office. The office became aware of the crimes when it was contacted by an unidentified person on Feb. 22, 2011, authorities said. Through an investigation which including interviewing the victims, Enamorado was charged …