Sara Domres, 28, has pleaded not guilty to charges she slept with one of her 16-year-old English students

A high school English teacher faces up to 12 years behind bars on charges she slept with one of her 16-year-old students.

Sara Domres, 28, appeared in court last Friday and pleaded not guilty to two counts of sexual assault of a student.

The former New Berlin West High School teacher and dance team coach claims she is innocent of the allegations, and that she only hugged the unnamed student when they met up outside school.

But the 16-year-old boy told police that he had sex with her 10 to 15 times - mostly in a park-and-ride parking lot in New Berlin, Wisconsin but also at a Motel 6 the night of the bachelor party for Domres' husband-to-be.

Police began investigating Domres in January, after one of the victim's concerned friends reported their inappropriate relationship to authorities.

It's believed that the relationship had been going on since May 2015, and that the teen was a virgin before he started having sex with his teacher.

In the course of their investigation, police uncovered more than 1,000 text messages sent between Domres and the student, who she called the pet name 'baby boo'.

'Baby Boo, I love you now & forever! Please be mine forever & ever. Always, your baby girl. P.S. Good luck on your quiz [smiley face],' one of the messages reads.

Scroll down for video

Domres is pictured above entering court on Monday. Since her arrest, her husband has stayed by her side

Police recovered 1,000 text messages Domres and the boy exchanged during their romance, which police say started in May 2015

'Hopefully you've been thinking of me Baby Boo. I should go because he will be home soon. I love you. Be good, think of me and no one else! Ha ha.,' another text message from Domres reads.

In another text message conversation, the night they allegedly stayed at a Motel 6, Domres reportedly asked the boy if she should marry him.

'You’re extremely attractive to me!!! I can’t wait for our night we are doing it no matter what!!!' she said.

The two also exchanged physical letters, which the boy kept. One back-and-forth - exchanged in class - included the following messages: 'We will have to plan something soon. I want a night again. Xoxo.' 'Yes! Definitely soon. I really want another night with you too baby boo!' 'I want to do you (smiley face symbol) NOW!!'

It appears she was seriously afraid that their illicit relationship would be found out.

When police confiscated her phone, they found that she had made a Google search for 'what's the prison sentence for a teacher sleeping with a student'.

When school officials learned of the allegations, Domres lost her job at New Berlin West High School (pictured)

Investigators say that Domres met the boy to have sex at the above Motel 6 the night of her husband-to-be's bachelor party

Many of the other times the two met up, they reportedly had sex at this park-and-ride parking lot in New Berlin

And in a text message to her student lover, she once asked him to stay quiet even if they did break up.

'I love you, too, baby and will forever. I'm just saying that if you ever don't, please still love me enough as a person to know how much that'd hurt me. You are amazing and mean the world to me. I want to be yours forever,' Domres wrote.

It's unclear whether the two continued their relationship even after Domres got married, but investigators say she did send the boy selfies on her honeymoon.

It was also revealed that Domres' husband caught her with the boy once in a parking lot of the New Berlin Ale House and that there was a verbal confrontation.

Following her arrest, Domres' husband has stayed by her side and was in court when she pleaded not guilty to charges on Friday.