Jodi Arias continued her testimony Monday alleging that not only did her ex-boyfriend Travis Alexander physically assault her, but she also claims she caught him pleasuring himself to a photograph of a young boy in January of 2008.

But Arias says she loved Alexander, believing he wanted to change. Therefore, she kept him in her life.

This all stems from her statements last week on the stand when she discussed a gift Alexander gave her for Valentine’s Day in 2007, which included a pair of boys’ Spider-Man underwear.

Arias is claiming she killed Alexander in self-defense, even though she had given authorities other stories about his death.

After Alexander’s body was found in June of 2008 at his Mesa, Arizona home, Arias told police she was not involved in his killing. She later told investigators that she witnessed two intruders break in and kill him. Eventually, Arias said she killed Alexander in self-defense.

On Monday night, HLN’s Dr. Drew asked a man, who was sitting in the courtroom, whether what Arias testified to earlier in the day was believable.

“I think she was being sincere," Jacob Whitehurst said.  “I believed what she had to say.”

Hear the full explanation to his response in the video player above.

Dr. Drew On Call airs Monday through Wednesday on HLN at 9 p.m. ET.  Follow the show on Facebook and Twitter @DrDrewHLN.

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READ: Arias: Travis looked at child porn, abused me
WATCH: New explosive claims in Arias testimony