Casey Anthony's life has drastically changed from a year ago, and May 21, 2008, may have been a pivotal day for the woman who has been charged in the death of her daughter, Caylee.

Anthony remains jailed on first-degree murder charges. Caylee's remains were found in December, about five months after she was reported missing.

Local 6 News investigative reporter Tony Pipitone continued his research into the timeline of Anthony's life, saying her "lies to her friend Amy Huizenga were getting harder to maintain. Anthony claimed she was going to rent or buy a house for her, Caylee and Huizenga to share."

"She was pretty much about to buy a place and that, you know, I could move in with them, that, you know, I was supposed to go see the house with them a few times. It fell through," Huizenga said in released transcripts.

On May 21, 2008, Anthony sent a text message to Huizenga, saying "I'm defintely sick" and adding a sad face emoticon.

Huizenga replied: "Oh no, stop that. Are we still going to look at that place?"

"I'm going to call the lady in a few minutes. I'm headed to the doctor's now," Anthony said.

Pipitone reported that Huizenga had her doubts about the long-unemployed then-22-year-old single mother living with her parents. Anthony blamed her supposed illness on work, saying "(I've been) working a lot. I put in almost 60 hours last week. "

"She kept telling me things that I thought kind of sounded made up, but I was like, 'She's my friend, let me give her the benefit of the doubt, maybe all this is really happening,'" Huizenga told investigators.

In the afternoon of May 21, 2008, Anthony sent Huizenga another text message.

"Can I raincheck seeing the house? I just got back from the doctor's and don't feel too hot at all. Stupid flu," she wrote.

"Totally. Get better," Huizenga replied.

Pipitone said records show that Anthony then got online and was contacted by a man who would change the course of her life, Tony Lazzaro.

In released documents, detectives asked Lazzaro how me met Anthony.

"Just browsing Facebook, and she was good-looking, so I hit her up," he said.

A detective replied, "Hit her up, meaning you sent her an e-mail or whatever?"

"Just sending a comment on her page," Lazzaro said.

"She said she was a Valencia student?" the detective asked.

"That's what it said on the page -- that it was a Valencia student," Lazzaro said.

But that was a lie because Anthony never graduated high school, Pipitone reported.

In just more than three weeks from that day in Anthony's life, Caylee would never be seen alive again, and Anthony would soon move in with Lazzaro, a man who told her if he were to have kids one day, he would want only boys, according to released documents.

Watch Local 6 News for more on this story.