A Trumbull police officer once hailed as a hero has fallen far from grace.Michael Gonzalez, 40, who made national news in 2010 when he donated a portion of his liver to the hospitalized 15-year-old daughter of a fellow officer, was granted a special pretrial program January 31 following two domestic violence arrests regarding an affair he was having with a female officer he was training.Gonzalez was recently allowed to retire from the Trumbull Police Department with his retirement benefits. The female officer, Kaitlyn Arcamone, who made the complaint against Gonzalez was fired, according to the minutes of the Trumbull Police Commission.Multiple law enforcement sources said Gonzalez is also under investigation by state police for an unrelated incident involving his work with the Trumbull Police Department\u2019s teen explorer program.On June 18, Gonzalez was charged with third-degree assault, second-degree threatening and disorderly conduct and Arcamone, 28, was charged with disorderly conduct.During a hearing on Thursday, Superior Court Judge Eugene Calistro Jr. granted Gonzalez the Family Violence Education Program, a pretrial diversionary program.Under the program Gonzalez did not admit his guilt but if he does not violate the 1-year protective order granted to Arcamone the charges against him will be dismissed.Senior Assistant State\u2019s Attorney Kevin Dunn told the judge that neither the state nor Arcamone objected to Gonzalez getting the program.Gonzalez\u2019s later arrest for allegedly violating the protective order against Arcamone for placing a note on the windshield of her car in a shopping center parking lot, was dismissed.Gonzalez\u2019s lawyer, Daniel Esposito declined comment.Dunn previously nolled or dropped the charge pending against Arcamone. Her lawyer, John R. Gulash, declined comment.Trumbull police did not immediately return calls and emails for comment.Trumbull police contacted Stratford police to report a domestic violence incident that occurred in Stratford on March 24 involving two police officers, according to the arrest warrant affidavits. Stratford police subsequently interviewed Arcamone.Police said Arcamone, who had been on the Trumbull Police Department less than a year and was being trained by Gonzalez, told Stratford police she and Gonzalez had gotten into an argument at his home in Stratford. She said the argument escalated. Gonzalez, who was married to a female police officer, told Arcamone he was going to have sexual relations with another woman, she slapped him, and a physical altercation escalated, police said.Stratford police records show that on March 24, officers responded to a 911 call of a man and woman arguing at Gonzalez\u2019s address. The 911 caller told dispatchers the man said he was going to kill the woman.Records show that officers went to Gonzalez\u2019s home as a result of the emergency call and spoke to Gonzalez who admitted having an argument with Arcamone. But no arrests were made at that time.