The school should send you a form 1098-T with the amounts they billed you for tuition and related expenses.
When you get that form, check to see if there's an amount in Box 1. If there is NOT, then you should go to your school or online student portal and get a receipt of the money you paid the school in 2013. You'll also want to account for the books (or any other syllabus required supplies) you've had to buy during the year.
Your fiance could be claimed by you only if they made less than $3,900 and lived with you ALL year.