PORTLAND, Ore. -- The father of missing Portland boy Kyron Horman filed papers Monday to have his estranged wife held in contempt of court, accusing her of violating a restraining order against her. The document also details an alleged sexual affair with one of her husband's high school classmates and a reported attempt to abduct the couple's young daughter Kiara.

Kaine Horman's attorney asked a judge to hold Terri Moulton Horman in contempt of court for showing a then-sealed restraining order to Michael Cook.

The filing alleges that Terri took the restraining order to Cook's home, where she showed him the document and allowed him to take cell phone photos of the document, which included Kaine's new address. The filing also states that a police search of Cook's phone found that Cook had done a Google search to map the new address.

The motion also states police told Kaine that Terri exchanged hundred of text messages with Cook and several photographs of Terri Horman in various stages of undress and graphic sexual activity. According to the filing, the sexual nature of the relationship between Cook and Terri Horman began on or about June 30, four days after Kaine Horman moved out of the family's Northwest Portland home.

READ:Court affidavit (PDF)

Cook was a high school classmate of Kaine Horman and also helped organize the first vigil for missing 7-year-old Kyron Horman.

Cook denies sexual relations

In an interview with KGW on Monday, Cook admitted that he had used his cell phone to photograph the sealed restraining order and that he had engaged in sexting with Terri Horman.

Cook also admitted having inappropriate communication with Terri Horman but he denied having sexual relations with her. I never slept with her, Cook told KGW.

Cook did admit that he had Googled Kaine Horman's new address on his cell phone.

She wanted to find out where Kiara was, Cook told KGW.

I'm a pretty straight shooter, said Cook. I didn't have sex with her.

Gym worker: Terri tried to abduct Kiara

In addition, the court filing stated that a clerk at a gym frequented by the Hormans said Terri came there on about June 28, before the restraining order was in place, and tried to abduct Kiara Harmon, in the words of the gym worker. Terri reportedly asked specifically when Kaine was there working out and to let her know the next time he appeared. The clerk told the manager what happened and the manager then contacted police.

Similarities to Murder-for-Hire plot

Monday's court filing also stated that police had told Kaine that Terri's sexual overtures to Mr. Cook resemble those made to the man Respondent (TerriHorman) attempted to hire to murder Petitioner (Kaine).

In the original restraining order filing, Kaine stated that police had told him Terri had tried to hire a landscaper to kill Kaine.

Terri Horman agrees to move out

Earlier Monday, Terri Horman agreed to voluntarily move out of the family's Northwest Portland home. Kaine Horman had filed an addendum to his restraining order to compel her to move out, and a hearing on that request had been scheduled for July 22.

Kyron disappeared on June 4 from Skyline Elementary Kyron's parents over the weekend put off all media contact for the week in anticipation of what they called heavy obligations by investigators on the case.

KGW's Kyle Iboshi and Colin Miner contributed to this report.

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