Thirty-year-old Nathan Middleton of Evansville was given the maximum sentence for burning the body of Aprina Paul of Fitchburg.
Middleton pleaded guilty in March to charges of hiding a corpse and mutilating a corpse.
The Wisconsin State Journal reports Paul's family and friends erupted in applause at the end of the hearing.
Authorities believed - but couldn't prove - that Middleton murdered Paul.
According to the complaint, Middleton said he found Paul dead in his bed Oct. 28 after having sex and doing drugs with her the previous night. The complaint said they met after Paul responded to Middleton's ad on Craigslist.