REVEALED: Gym stalker’s chilling notebook with details about fitness fanatic who mysteriously vanished before being found dead

An Arizona man accused of killing a former colleague he stalked at the gym kept a sick notebook detailing his obsession.

The diary of Juan Cuellar, 51, was discovered by police investigating the death of Doris Aguilar, 25.

Both were found dead in a car outside a Phoenix steakhouse on July 7, a week after Aguilar was reported missing by her panicked family.

Police said Cuellar killed her before shooting himself after what her family said was a campaign of intimidation that lasted more than a year.

The notebook contains chilling notes that shed further light on the extent of Cuellar’s obsession, although investigators noted that many of the notes were fake.

“It took some time to go through the notebook, which offers a very different dynamic of what happened than what the evidence may have shown,” Phoenix police Sergeant Rob Scherer said. Family AZ.

One of the entries seems to refer to the murder and pretends it was an accident.

“She picked it up. She didn’t know the security was off. I went to grab the gun and it went off. I panicked and left. I knew it would be my fault,” Cuellar wrote.

However, police refuted the statement and said the weapon found in the vehicle has no safety.

Shivering, he then tells how he drove around with the victim and changed her clothes so she wouldn’t get dirty.

“I couldn’t bear to be without her in my life,” Cuellar wrote in another message, reportedly suggesting he was angry about her seeing other men.

‘I hope she can forgive me. Please tell my family it was an accident,” one of the final notes reads.

Police discovered a notebook full of chilling notes written by her alleged killer Juan Cuellar detailing his sick obsession

Her body was discovered along with Cuellar’s in a car parked outside this Phoenix steakhouse

Other bizarre writings include delusions about a daughter the two shared who does not appear to exist.

“I can tell you there was no romantic relationship at the time of the murder,” Scherer said. “We don’t have any information about a child in common between the two,” Scherer said.

Aguilar was reported missing on July 1 after she failed to show up at the gym where she spent a lot of time.

Her family immediately suspected that her former colleague Cuellar might be to blame after he sent her harassing messages.

The two met while working at a distribution center before Cuellar was fired for his threatening behavior.

The stalker would show up in the parking lot of the gym Aguilar attended, forcing her to change gyms three times, according to a private investigator the family hired to try to track her down.

Just a few days before Aguilar mysteriously disappeared on June 27, the alleged stalker appeared to indicate he knew which facility she was now attending.

Her concerned family had reported her missing a week earlier and immediately suspected Cuellar’s involvement after stalking her at several gyms.

On June 27, just a few days before Aguilar mysteriously disappeared, an alleged stalker wrote on a Facebook page with a gun as a profile photo that he was getting his membership back — presumably from the gym Aguilar frequented.

He wrote on a Facebook page with a gun as his profile picture: “Getting my membership back… [see] see you soon,” reports Fox 10.

Aguilar’s car was eventually found abandoned on July 8 in a shopping center near the intersection of Interstate 17 and Bethany Home Road.

The car was unlocked, containing her purse and wallet full of cash.

Police said Cuellar killed Aguilar before killing himself a few days later, although they are unsure where exactly she died.

Their severely decomposed bodies were later found in the same vehicle.

Aguilar’s family says Cuellar’s obsession drove him to murder.

“They have their faith as the why. Our investigators are still trying to figure that out,” Scherer said.

Aguilar’s family and Steve Fischer, a private investigator, believe Cuellar had been Aguilar for more than a year.

The notebook contained some entries that were false, including delusions about a daughter the two shared who does not appear to exist

Private investigator Steve Fischer said the stalking had been going on for more than a year

According to Fischer, Cuellar was so obsessed with Aguilar that he kept showing up at the gyms where she trained.

“He was so obsessed that he had a picture of her taped to the back of his cell phone,” Fischer said.