The father of missing 7-year-old

argues in court papers that his wife struck up an intimate and sexual relationship with one of his high school friends and shared confidential information from a sealed restraining order that allowed him to map the address where

has lived with their daughter since he moved out of his home.

Court filings Monday also revealed that

, Kyron's stepmom, was "sexting" her husband's high school friend, Michael Cook, on June 30, four days after Kaine Horman left the house with their young daughter and two days after he filed for divorce and a restraining order against his wife.

The latest twists in the more-than-monthlong investigation into Kyron's disappearance raised further questions about the actions of Kyron's stepmom in the days after the boy disappeared, but they shed little light on what's happened to the missing second-grader since he was last seen June 4 at Skyline School.

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Terri Horman's attorney also alerted the court Monday that she would not contest her husband's restraining order or his push to force her out of their Portland home on Northwest Sheltered Nook Road. The restraining order restricts Terri Horman from any parenting time with their 20-month-old daughter Kiara. Yet, she would have the right to ask the court to reconsider at a later date.

In his brief letter to the court Monday, her attorney, criminal defense lawyer Stephen Houze, wrote that his client intends to seek a family law attorney regarding the pending divorce.

Meanwhile, Kaine Horman's lawyer, Laura Rackner, asked the court Monday to impose "remedial" sanctions against Terri Horman for disclosing Kaine's current address -- information that remains sealed in the restraining order -- to one or more unauthorized parties. She's seeking sanctions, ranging from a $500 fine to confinement for being in contempt of court.

Rackner and Houze expect to appear before Judge Keith Meisenheimer at 1:30 p.m. today to set a date for a hearing on the contempt allegations.

Houze said Monday night he would not be making any comments on the latest allegations against Terri Horman, but added, "We will be vigorously defending her, I assure you."

In the court filings, Kaine and his attorney further allege that Terri Horman went to her husband's gym and tried to "abduct" Kiara from the gym's day care while he was working out on June 28, two days after he had moved out with the child and hours before Terri was served with a restraining order.

Law enforcement informed Kaine Horman that Terri Horman not only shared concerns about her marriage with Cook and made sexual overtures to him, but made similar overtures to the landscaper who she had attempted to hire to murder Kaine months before Kyron's disappearance, the filing says.

In an interview with law enforcement, Cook told authorities that Terri Horman let him photograph the sealed restraining order, photograph Kaine Horman's new undisclosed address, and he shared the information with at least two people.

Law enforcement found hundreds of text messages between Terri Horman and Cook, as well as photographs of Terri "in various stages of undress and graphic sexual activity" on Cook's cell phone, the filing says.

"While respondent at times, references the fact that she misses both children Kiara and Kyron, the significant majority of the material deals with social and personal matters between Mr. Cook and respondent and belies that assertion," Rackner wrote.

She added that Terri Horman asked Cook to lie to her own attorney and others about the fact that she had gone to Cook's home.

If the murder-for-hire plot and recent "sexting" allegations are true, associate clinical psychiatry and behavioral sciences professor Dr. Alan Lipman, of George Washington University Medical Center, called Terri Horman's actions "shocking recklessness."

"There's a pattern of impulsivity , reckless behavior and apparent disregard for the well-being of her stepson at a time of the greatest crisis for her stepson," said Lipman, who also founded the Center for the Study of Violence in Washington, D.C.

Kaine Horman left the house with their daughter on June 26 after investigators told him that Terri Horman had solicited her landscaper to kill him in an alleged murder-for-hire plot six to seven months before Kyron's disappearance. In court papers seeking a restraining order against his wife, Kaine Horman said he believes his wife is involved in the disappearance of his son.

Terri Horman, 40, has not been charged with any crime. The investigation into the boy's disappearance is ongoing.

Kaine Horman and Michael Cook, 37, both attended Shoreline High School north of Seattle where they both played football. Cook was one of a few of Kaine's friends from high school who ended up moving to Portland. Kaine had tried to reconnect with him once Cook moved to Portland, but they never did until Cook showed up at their home after Kyron's disappearance.

Along with two others, Cook, who is divorced with a son, helped organize the first vigil for Kyron. He was later seen at Kaine and Terri's home after Kaine moved out, picking up the mail and bringing in food and drink to Terri, her friends and relatives. He told The Oregonian he was just trying to be supportive in a time of need.

When asked why he was spending so much time at the home shortly after Kaine had moved out, Cook said of Terri, "I'm better friends with her now. I just care about them and want their son to be found."

Staff writer Lynne Terry contributed to this story.

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