A married middle-school English teacher and cheerleading coach is accused of having sex multiple times with an 15-year-old student and is now pregnant.

Katherine Ruth Harper, 27, was arrested last week and charged with having an improper relationship with a student in Trophy Club, Texas, a wealthy suburb northwest of Dallas.

Harper, a seventh-grade teacher at John M Tidwell Middle School, traded several nude photos with the boy by cell phone, according to an arrest warrant affidavit reported by the start telegram.

The affidavit says police launched an investigation into the alleged inappropriate relationship after receiving an anonymous tip through the school district website naming Harper and the student, whose identity is being withheld because he is a juvenile.

When a school official confronted the boy with questions about the relationship, he cried and admitted to sex with the teacher, according to the affidavit.

In an interview with a state child protective services investigator, the boy said that Harper came over to his house and the two drank alcohol together before taking their clothes off, according to the affidavit.

'One thing led to another and she told me to "put it in" and I did,' the boy told investigators, according to Fox4.

The boy said he and Harper had sex multiple times after that in June and July of 2016.

Police seized the boy's cell phone and found records indicating the two communicated 76 times over that time period.

Harper is now pregnant, but it's unclear from the affidavit whether the boy is the father of the child.

'She's about eight months pregnant, so if we go back in time it's around when that event took place, but she is married, we believe, still. So we're not sure what that leads to,' Trophy Club Police Chief Patrick Arata told Fox4.

Harper has been released on a $15,000 bond.

Wonders will never end.....I thought it was only some species of men that are pedophiles... Didn't know women are joining the trend.

This case is becoming so common amongst female teachers and male students. Oyibo sef