Jodi Arias was back on the witness stand Monday as part of her first-degree murder trial for the 2008 death of her ex-lover Travis Alexander.

On the second day of Arias' cross-examination, prosecutor Juan Martinez continued to point out "inconsistencies" in Arias' testimonies. He weaved in and out with questioning about the stabbing of Alexander.

Alexander, a 30-year-old Mormon motivational speaker, was found dead in his Mesa, Ariz., home on June 4, 2008. He was stabbed 27 times with a slit from ear to ear and shot in the head. Arias confessed to the gruesome crime and said she killed her ex-lover in an act of self-defense.

Martinez grilled Arias with intense questioning about her selective memory because she testified on Feb. 20 the details of when she shot Alexander but said she does not remember how she stabbed him.

"You didn't seem to have any problems on direct examination when you were talking to us about all of the sexual exploits with Mr. Alexander, did you?" he asked.

"I did have problems," replied Arias, according to HLNTV.

"You regaled us for days on end about your exploits, didn't you?" Martinez asked,

Martinez then asked her if she was more concerned about her "feelings of embarrassment" than the truth. Arias admitted there were several reasons why she did not tell the truth, but she felt more "ashamed" about it than embarrassed.

"And to continue this litany of lies, it isn't restricted to Utah. You also lied to people in Arizona, didn't you?" Martinez asked her.

"Yes, everyone," Arias admitted.

Martinez reminded Arias about the lie she told a friend the day after she killed Alexander- she hoped that her "kids would play with Alexander's children in the future."

Martinez asked Arias if she thought he was alive at that time. Arias said she thought he was dead, but it was just a wish she had. Martinez was making a point that she was pretending he was alive though she knew he was already dead.

Martinez played a snippet of footage from Arias' CBS 48 Hours interview. Arias said on the show she thought Alexander's family deserved to know what happened to him so she sent an 18-page letter to his grandparents on July 28, 2008, more than a month after his death. The letter explained that two intruders killed their grandson.

Martinez played another clip from the CBS 48 Hours interview and pointed out that Arias smiled in the mug shot. When asked why she smiled, Arias said because she was innocent and it is how Alexander would have smiled for the picture. He pointed out that Arias' statement that smiled in her mug shot because she was "innocent" contradicts her claim that she wanted to commit suicide

Martinez pointed out more evidence supporting his defense that Arias has consistently lied about the murder. The prosecutor made several references to her journal entries.

Martinez referenced her testimony about the day Alexander hit her in the car. In her journal Arias never mentioned the violent episode and wrote that Alexander "the best."

Martinez also provided proof of a text message conversation the same day Alexander allegedly hit her. The transcription showed that Arias called her murder victim "sweetie" and asked to borrow his BMW.

If Arias is convicted of the murder that she confessed to she will likely face the death penalty and become the fourth woman in Arizona's history to die by lethal injection.

Watch the live stream of Arias being cross-examined by prosecutors in her murder trial on Tuesday starting at 12:30 p.m. EST.

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