my boyfriend and i caught a case together he was sent to prison, i was placed on probation, he is on parole wondering if we can get married

You didn't state what type of criminal case you had and whether there were any contact restrictions between you two.  If there are restrictions, this would obviously affect whether you can marry or not. Unless you are subject to a no-contact order or prohibited under your probation or parole orders from seeing each other, there should be no restrictions on marriage.  However, I advise contacting your probation officer to verify.  Additionally, probation requires permission for moving (I'm assuming one of you will be moving), so you probably need written permission from your probation officer.