A substitute teacher in D.C. accused of having sex with a student on her first day at the school pleaded not guilty.

Symone Greene, 22, was working at Options Public Charter School in Northeast D.C. on Friday when she first met the victim, a 17-year-old football player, according to court documents.

The student told police he was working as an office assistant and helped Green twice that day in her English class. The student says he flirted with Greene during class, gave her his cell phone number, and later received a text message from her.

While the student did not recall the exact contents of their messages, he said he did ask if she was "kinky."

She allegedly responded, 'I don't tell[;] I show," court documents state.

Toward the end of the school's pep rally that day, the teen went to Greene's classroom, where she allegedly performed oral sex behind the teacher's desk. The victim recorded the sex act and later shared the video with his teammates and a childhood friend.

Student asked substitute teacher to perform sex act the same number of times as his football jersey number. — Mark Segraves (@SegravesNBC4) October 22, 2014

Greene allegedly sent the teen a text message over the weekend asking him not to tell anyone.

"When school administrators learned of the incident Monday morning, we immediately contacted the Child and Family Services Agency, the Metropolitan Police Department, and the parent of the student," Shannon Hodge, the school's executive director, said in a statement.

Greene has been charged with first-degree sexual assault against a minor in a significant relationship.

Although the age of consent in D.C. is 16, Greene was charged because she was the teen's teacher. According to D.C. law, age-of-consent rules are not in play in when it comes to "significant relationships," which include teachers and their students.

Greene had a court date Wednesday, where she pleaded not guilty and was ordered to stay away from the vicitm, minors and Options Public Charter School.

Hodge said Greene was contracted through a company based in Delaware and had never worked at the school before.