MADISON - Tyler Peterson couldn't let his on-again, off-again girlfriend go, and she couldn't make up her mind whether to break up with him in the hours before Peterson killed her and five others at a party in Crandon last fall. The state Justice Department released text messages Thursday that show Peterson, a 20-year-old Forest County Sheriff's deputy, went on clinging to 18-year-old Jordanne Murray, even as she told him she needed time to sort out her feelings. "That would be great if i gave u some time n i knew for sure we would be together in the end, but my worst fear is losing u to someone else," Peterson wrote back. About 14 hours later, around 2:30 a.m. on Sunday, Oct. 7, Peterson found Murray snuggling with 20-year-old Aaron Smith at a party at Murray's apartment in Crandon, a town of 2,000 people about 90 miles northwest of Green Bay. Peterson opened fire with his SWAT assault rifle. He killed Murray, Smith and four other partygoers, including Lindsey Stahl, 14; Katrina McCorkle, 18; Lianna Thomas, 17; and Bradley Schultz, 20. He shot another partygoer, 21-year-old Charles Neitzel, but Neitzel survived by playing dead. Peterson fled and killed himself in the woods hours later. His blood alcohol level was 0.125 percent when he died. Just before 3 a.m. on Saturday, Oct. 6, the day before the shootings, Murray wrote Peterson, saying Smith had passed out on her couch. The message said she didn't know what was going on with "us" -- it's unclear whether she was referring to Peterson or Smith -- but stressed she didn't do anything wrong. A second later she wrote Peterson again: "dont think u r treatin me the way i want to b treated yet i just dont no my feelings on us." Peterson responded that he hoped they could work through their problems and they were a match made in heaven. Murray wrote to Peterson and apologized, saying she didn't know what to do and she wasn't being fair to him. Later that morning, Peterson messaged back to say he wasn't mad at her, but he felt "worthless" and was struggling to move on. Murray responded, "Well i don't think u have to but i just need some time." After Peterson told her his worst fear was her ending up with someone else, Murray told him they might be able to do something together after she was done with work. Peterson wasn't convinced, asking her twice whether she was sure she wanted to see him. She didn't send a text message back. At 9:10 p.m. Peterson messaged Murray and said "I hate this so much!" He left a voicemail on her cell phone at 1:22 a.m. on Oct. 7, asking why she wasn't answering her phone. At 1:37 a.m., he messaged her again, saying "Jordanne i just don't understand???" Less than 10 minutes later, he wrote her for the last time, saying "Those guys r my friends, 4 don't know y u got so pissed." Neitzel told investigators Peterson controlled Murray and had been harassing and stalking her for two weeks before the shooting. Peterson and Murray's parents said Murray let Peterson move in with her in August but kicked him out after three weeks after he helped some girls move. They got into a fight the night she threw him out, and he tore the cable connectors out of the television. Police had to come to the apartment and calm him down, said Murray's father, Paul Murray. Voicemails taken from Peterson's phone show family members and Crandon Police Chief John Dennee tried to contact him while he was on the run. On Sunday afternoon, after Peterson had killed himself, a male caller left a message swearing at Peterson and demanding they meet in a secluded place so he can "murder" him. (Copyright 2008 by The Associated Press. All Rights Reserved.)