former destrehan high school teacher shelley dufresne was arrested in september after the teen in question started bragging to friends at the st charles parish , louisiana school that he had sex with two teachers .
an investigation later revealed that the unidentified teen had sex with both his current english teacher at the time , dufresne , and his english teacher from the prior year , 24-year-old rachel respess - including an alleged a threesome with both at respess 's house .