The 62-year-old man offered her money for sex and, when she refused, he took out his penis and struck her with it, the Daily Mail reported. Fred Thomas, from Cushing, Maine, pleaded guilty to the assault.
He will also be on probation for a year for domestic violence and indecent conduct. The incident took place in July when his wife of 39 years, who was estranged from him, stayed at his home.
The defence lawyer said the estranged wife planned to go to Pakistan to meet a man she met online.