Authorites say Tosha Pruitt, 44, was sitting in the driver's seat of a 2001 Lincoln Aviator when she was shot in the head.
Authorities say Rodney Levern Keeton, 45, shot her outside his Wilmer home and confessed to relatives that he did it. Records show Keeton and Pruitt were married for 10 years and had two children together before they divorced in 1997.
Keeton violated a protective order five times in the late 1990s and he was convicted of aggravated assault with a deadly weapon around the same time, records show.
Relatives told our media partner KXAS-TV (NBC5) the couple had reconciled and had been dating for two years.