A teenager who had a fling with his teacher when he was just 16 has been jailed for four years for armed robbery at the High Court in Glasgow.

Gary Ralston, 19, first hit the headlines three years ago when it was revealed he "engaged in sexual activity" with his married 35-year-old history teacher.

Bernadette Smith groomed the teenager at Bannockburn High School in 2013.

The mother-of-three told police at the time that she was in love with the baby-faced student.

She spent the night in bed with the teenager where she stripped down to her jeans and bra.

Smith was spared jail but placed on the sex offender's register.

Today, Ralston was led away to jail after being found guilty of robbing the home of a woman who took him in following the teacher scandal back in 2013.