Because of Huxtable's influence over her, Judge McDonald said the victim had to repeatedly lie to her family about her whereabouts.
On one occasion, he placed his arm over the top of her shoulder, rubbed her neck and back, pulled her tighter to him and kissed her on the lips.
When his offending came to light, Huxtable accepted the text messages were inappropriate and that he knew she was 13.
Judge McDonald said Huxtable's offending has had a huge impact on the girl and her family, solely driven by him in an attempt to have a sexual relationship with the girl.
The Crown submitted a starting point of between 12 and 18 months jail for the grooming charge with a three to six months uplift for indecent assault.
Young said home detention was appropriate.
The charge of grooming was introduced into the Crime Act 1961 in response to the digital age we now lived in and was considered serious by Parliament, Judge McDonald said.
"It was serious for this young girl. Serious for this young girl's family," he said.