Students from a Texas high school testified Thursday about details of their dealings with Brittni Colleps, the 28-year-old mother of three and former high school teacher being charged with having group sex with her students.

One student's cell phone video of Colleps allegedly having sex with four other students was shown to the jury this week, and testimony from students revealed details of their intimate contact with Colleps, who taught English at Kennedale High School in Kennedale, Texas.

All students involved were 18 at the time. Three of those students told the jury in their testimony that they don't consider themselves victims, and they don't think Colleps should be prosecuted.

One student said things began when he attended a baseball game with Colleps and exchanged text messages that turned sexual. He began visiting Colleps' home while her daughters and Army specialist husband were away - sometimes alone and sometimes with friends.

On one occasion, Colleps cooked spaghetti for a group of students, showed them sex toys and modeled lingerie, the student testified. The group then moved to Colleps' backyard where a game of truth or dare resulted in the student being dared to have sex with his teacher. Eventually the entire group entered Colleps' bedroom and all of the students had sex with her, he said.

The student testified that he and his friends discussed "keeping it low" so that Colleps wouldn't be caught.

Another student who spoke to the court said he learned from a friend that Colleps was having sex with students and eventually went along with a group to her home. He was the one who recorded one of the encounters with a cell phone.

But when that student was confronted by school administrators about the incident, he said he denied it - not out of embarrassment, but because he wanted to protect Colleps.

"I didn't want to get her in trouble," he said. "I wanted to save her."

Colleps got emotional in court, crying as she said she never wanted the students to be forced to testify.

If convicted, Colleps could face 20 years in prison and a $10,000 fine for the five charges of an improper relationship with a student. She does not face statutory rape charges because the students were older than 18.