updated 09/29/2010 AT 1:45 PM ET
•originally published 09/29/2010 AT 6:45 PM ET
She had no problem when it came to the high notes during her American Idol tenure, but as runner-up Crystal Bowersox preps for her big day, she’ll be the first to admit it: She knows nothing about life as a wife.
“I’ve never really in my life had a great representation of what a good marriage is,” the singer, 25, tells PEOPLE. “My parents divorced, and a lot of people in my family are divorced, so I hope to give my son a great model of what a happy marriage is or relationship could be.”