Jodi Arias book by Jane Velez-Mitchell to hit shelves on August 20

A new book about convicted murderer Jodi Arias reveals Travis Alexander’s inability to stay away from her helped lead to his grisly 2008 murder.

HLN TV host Jane Velez-Mitchell’s new book about Jodi Arias and the Mesa, Arizona murder of her on-again off-again lover Travis Alexander details the torrid affair that preceded the grisly 2008 crime.

Exposed: The Secret Life of Jodi Arias hits shelves August 20.

The New York Post published an excerpt from the upcoming book.

“Jodi elicited Travis’ reckless forbidden passion,” writes Jane Velez-Mitchell of the practicing Mormon.

“Unfortunately for her, it was also what Travis loathed, as it came with more and more guilt each time.”

Jane Velez-Mitchell reveals a deeply unhealthy relationship between Travis Alexander and Jodi Arias that extended even after Alexander broke things off with his future murderer in 2007.

Not long after the breakup, the two began having an intimate relationship again. And according to the book, Travis Alexander was desperately torn between following the dictates of his Mormon faith and those that came from inside himself.

Desperate to stay near her obsession, Jodi Arias offered to clean Travis Alexander’s house for $12.50 an hour. And unable to stop himself from keeping her around, Travis Alexander gave Jodi Arias the keys.

“Unfortunately, giving Jodi access to his house meant Travis was able to keep his addiction to his guilty pleasure full-blown. The pusher was right there serving him his drug on a silver platter,” writes Jane Velez-Mitchell.

But as Travis Alexander began to date other women and distance himself from his fiery former lover, Jodi Arias became progressively unhinged.

“Whether it was because of his upbringing or Jodi’s skills in the bedroom,” writes the TV host, “Travis clearly had a difficult time deciding what he was going to do about Jodi.”

And Travis Alexander’s forays into the “dark side” were hurting his chances of leading the normal Mormon life he so desired.

Jodi Arias’ behavior became progressively erratic – she began stalking Travis Alexander when he was with other women and hacking into his Facebook account. She would show up to his home unannounced.

Though she eventually moved back to her home town in California, the world would soon learn how quickly Jodi Arias returned to Travis Alexander’s Arizona home.

On June 4, 2008, Jodi Arias would stab her former lover some 29 times, shoot him in the face, and slice him ear-to-ear.