MINNEAPOLIS (WCCO) – A 19-year old Washington State man is charged with using social media to control a 13-year-old Stillwater girl.

Law officials say the crime is straight out of the book “Fifty Shades of Grey.”

The details are disturbing.

Cheyenne Foster ordered the girl to wear a collar and commanded her to follow his orders.

According to the criminal complaint, 19-year-old Cheyenne Foster called himself “Hero” and named his 13-year-old victim “Kitten.”

He used the internet to influence and control the seventh grader. He even set up rules she was supposed to live by. Her parents discovered the rules by just walking into her room.

“They found taped to her bedroom door a list of rules that this alleged perpetrator had sent to this young girl and had compelled her to follow,” Washington County Attorney Peter Orput said.

The complaint says Foster’s rules were not only sexual in nature, they were centered around control.

From dictating that everything Hero says be taken as truth by Kitten to insisting Kitten never outright refuse a suggestion, the alleged online predator commanded the seventh grader to do whatever he asked.

“The themes in the digital trafficking between the two parties seemed a lot like the themes in ‘Fifty Shades Of Grey,'” Orput said.

Stillwater schools sent out a letter to parents telling them about the ongoing investigation and how it will take the entire community to work together to protect the children.

“Our duties are to take care of our victims and then hold the perpetrator to account,” Orput said.

Orput says parents need to be the front line of defense against those who prey on kids.

“I’ll prosecute my way out of this, but we need help,” Orput said. “We need parents to step up and get involved.”

The seventh grader is getting help from counselors. Orput says he believes there are other girls Foster targeted at Stillwater Junior High.

And he says he expects more arrests.

Reg Chapman