EULESS -- A teacher at a HEB ISD middle school was arrested last month for sexual assault of a child, Euless police confirmed in a news release.

According to the arrest warrant affidavit, Euless Junior High teacher Cornelius Smith impregnated the 15-year-old girl.

On Friday, June 3, the girl told her parents she was pregnant and Smith had called to tell the parents he was the father. The following Monday, Smith agreed to meet the family and go with them to the Euless Police Department.

Smith was the victim's speech teacher for the 2015 school year.

Smith told police he began communicating privately with the victim through the Kik messenger app nearly every day over Christmas break of 2015, then in February 2016 he began seeing her outside of school and the relationship became physical.

The victim told an investigator that Smith would get her out of other teacher's classes to come to his classroom, where they would kiss and once had oral sex.

According to the affidavit, Smith told police he and the victim only had sex once, in May 2016 in the back of his car in the parking lot of a vacant store.

The victim told police a different story.

She told an investigator Smith came to her home on more than one occasion when her parents weren't home during spring break, and that they had consensual sex then, as well.

The victim contacted Smith on June 2 to tell him she might be pregnant, and they confirmed it with two store-bought pregnancy tests and a trip to a pregnancy center.

The girl told police Smith had told her he would "help her if she was going to have the child or have an abortion," but "he would have to take his wife and child to East Texas first," the affidavit says.

The victim's mother brought the girl's cell phone to police on June 7, and messages recently deleted off of the device corroborated her account of the relationship.

Smith surrendered himself to the Tarrant County Sheriff's Department on June 22. He is charged with sexual assault of a child, a second-degree felony.