If he files for Default, then you will get a letter from the court that you were Defaulted. After that, if he files the proper paperwork, then you will get a notice of judgment stating you are divorced.
If he doesn't file the default, then the case just sits. After sometime, of no activity, the case could be dismissed.
You can Monitor the progress of your caser by entering your case number at the link below.
A lot of people think that just because a petition for divorce was filed then the divorce will happen automatically. If you haven't received a notification that a default has been entered, then chances are that your spouse thinks that just because a petition was filed, then the divorce will happen. I suggest that you file your response. If you don't have the funds, then you might qualify for a fee waiver. Then you could file your response and then request that the court set a hearing date by filing a request for trial. If ne doesn't file for default, then after 5 years the case will be dismissed and the parties will need to start all over again.
Your most critical question is "And in the event that he doesn't file for default, what happens to the case? " and the answer is "Nothing, and if nobody takes steps to finish it, in about five years, the court will dismiss it and you'll need to start over again." If one or the other party doesn't take steps to finish the case, the court will NOT automatically give you a divorce six months after the papers are filed.
Sign up to receive a 10-part series of useful information and legal advice about the divorce process.