Lawyers in the Jodi Arias death penalty sentencing retrial wrapped up another intense day in court after a psychologist described the convicted boyfriend killer as a "stalker."

Dr. Janine DeMarte, who was called to the witness stand on Wednesday by prosecutors, gave a testimony that contradicted the defense argument that Arias was emotionally abused by Travis Alexander, the man she murdered almost seven years ago.

Dr. DeMarte described Arias as an extremely jealous stalker with borderline personality disorder and a fixation on Alexander, reports Fox 10 Phoenix. The psychologist also said that Arias refused to let him move on and resorted to spying on him and confronting other girls that he dated. She went on to say that Arias was prone to manic episodes of extreme happiness and despair and discredited defense arguments that Arias murdered Alexander as a result of abuse she endured by him and her own family in the past. The psychologist added that police interviews showed that Arias wasn't liked by some of her family members.

Dr. DeMarte is expected to be cross-examined by the defense starting on Thursday.

Earlier in the week, prosecutors presented the jury with sexually explicit text messages that Arias exchanged with Alexander to show that she was enthusiastic about their sex life. Prosecutors read some of the graphic messages aloud on Tuesday in effort to cast the convicted killer in a negative light.

Arias' former co-workers also said that she displayed inappropriate behavior with colleagues, while one witness said she that gave her number out to a man on the flight after leaving Alexander's memorial service, reports Fox 10 Phoenix.

Although Arias was found guilty of first-degree murder last May in the death of her ex-boyfriend, in her first trial, jurors failed to reach a unanimous decision on her sentencing. As a result, the retrial will determine whether she should be sentenced to death, life in prison or life with a chance of release after serving 25 years.

According to medical examiners, Arias stabbed Alexander 27 times, primarily in the back, torso and heart in his Phoenix home. She also slit Alexander's throat from ear to ear, nearly decapitating him, and she shot him in the face before she dragged his bloodied corpse to the shower and took pictures of him.

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