The Anderson County Sheriff's Department is investigating a possible murder-suicide.
The sheriff's department says it happened early Monday morning on County Road 1406, just South of Palestine.
They say a driver called after seeing a pick-up truck in the middle of the road with a man slumped over.
When deputies arrived they found the man and a woman, both with gun shot wounds to the head. Rachel Hickman, 23 was pronounced dead at the scene. Her boyfriend, 19-year-old Justin Riddle was still alive, but later died at a local hospital.
Authorities are waiting on forensic evidence, but say it does appear to be a murder-suicide.