That rule about one spouse itemizing and the other one having to itemize, or both spouses having to use standard deduction only comes into play if you are married and filing married filing separately. You are not married so that rule has nothing to do with how you file. As VolvoGirl said, you are both Single or if there is a dependent child in your family then one of you might file as Head of Household and claim the child.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
