Alleged Golden State Killer's Ex Fiancee Bonnie Ueltzen Broke His Heart

Charged Golden State Killer Joe DeAngelo's killing spree was triggered by rejection from his former fiancée Bonnie Ueltzen.

The pair was engaged in the early 1970's but she broke it off sending him into a tailspin.

DeAngelo is believed to be responsible for at least 12 murders and more than 50 rapes in California between 1975 and 1986

The 72-year-old wheelchair bound killer was nabbed after police matched DNA from items he discarded with samples found at his various crime scenes.

Ironically, after splitting with DeAngelo, she became a successful travel blogger who married an accountant.

Now, however, after living a crime free and happy life she has gone into hiding after being linked with the infamous killer.

Chillingly, during one of his attacks the DeAngelo reportedly lay down next to his victim after raping her and sobbed: "I hate you. I hate you. I hate you, Bonnie."

DeAngelo, 72, an ex-cop who went on to work in a grocery warehouse for nearly three decades, was arraigned in court in Sacramento, California, on Friday.

Now divorced and recently retired, he was quietly living in a single-story home in the Sacramento suburb of Citrus Heights until Tuesday's arrest.

Detectives believe he started his reign of terror when they were both students at Sierra College in Rocklin, California, 20 miles from Sacramento.

She was then know as Bonnie Colwell and the couple announced their engagement in the local newspaper although no wedding date was ever officially set.