A female B.C. teacher accused of having a years-long sexual relationship with a young student shared a sleeping bag with the boy at a summer camp, a court heard Friday.

Deborah Ashton, who faces five charges, is accused of starting a sexual relationship with the 12 year old boy in 2002, when she was 37 and the Grade 7 student was 12.

A friend of the alleged victim told the Vernon courtroom that he saw Ashton and the student "moving around" together in a sleeping bag while lying on the bottom level of a bunk bed.

The witness also testified he saw Ashton and the boy wrestling in the grass while on a basketball trip and cuddling together while watching TV at his friend's house.

Under cross examination, defence lawyer Terry La Liberte accused the witness of making up his testimony after he heard his friend tell stories of the alleged affair.

"There's some serious issues with his recollection and with things he didn't recollect and that's what it's all about," La Liberte said. "It's just a one-trick case and whether or not this boy can be believed, and will be believed."

The trial will resume March 23 when Ashton's ex-husband returns to finish his testimony.

It is Ashton's second trial on the charges after the first ended in 2011 in a mistrial due to a hung jury.

With files from the CBC's Brady Strachan