A 15-year-old Texas boy was charged with murder Wednesday night after prosecutors say he recorded sexually assaulting his girlfriend and choking her to death. Police found her body beneath a sink in an abandoned apartment complex across the street from their Houston high school. The boy is charged with murder. “I don’t want to. I told you I don’t want to!” Karen Perez, also 15, can be heard saying on the recording, according to prosecutors. “Five months ago, he said if she broke up with him, her family and friends would never see her again,” Gabriela Treviño, 25, a family friend, told the Houston Chronicle. When authorities confronted the boy with evidence, he reportedly admitted to killing Perez. He has not been identified by police because he’s a juvenile.