(AP) — A Georgia man swapped sexual text messages with a teenage girl while his toddler son sat forgotten and dying in the back seat of the father's sweltering SUV, his young texting partner testified in court Friday. According to a transcript of their text messages that the young woman read in court, one time Harris asked for a photo of her breasts and she replied: "I'm at school." The Associated Press does not identify victims of sex crimes and is not identifying the young woman, who was underage when the explicit messages were sent. The judge also has barred news organizations from broadcasting her voice and likeness to protect her identity. Prosecutors say Harris, who had moved to metro Atlanta from Alabama in 2012, killed his young son intentionally because he wanted to escape from the responsibilities of being a husband and father. Harris' trial was moved from Cobb County in the Atlanta suburbs, to the coastal port city of Brunswick because of pretrial publicity.